A family of very small viruses containing circular, single-stranded DNA and possessing no envelope. The modes of transmission are not known.
Virus diseases caused by the CIRCOVIRIDAE.
A species of non-enveloped DNA virus in the genus ANELLOVIRUS, associated with BLOOD TRANSFUSIONS; and HEPATITIS. However, no etiological role has been found for TTV in hepatitis.
A genus of the family CIRCOVIRIDAE that infects SWINE; PSITTACINES; and non-psittacine BIRDS. Species include Beak and feather disease virus causing a fatal disease in psittacine birds, and Porcine circovirus causing postweaning multisystemic wasting syndrome in pigs (PORCINE POSTWEANING MULTISYSTEMIC WASTING SYNDROME).
The complete genetic complement contained in a DNA or RNA molecule in a virus.

Ultrastructure of porcine circovirus in persistently infected PK-15 cells. (1/285)

The ultrastructure of porcine circovirus was examined in persistently infected porcine kidney (PK)-15 cells. Virus-infected PK-15 cells had large numbers of intracytoplasmic inclusions, and a few cells had intranuclear inclusions. Intracytoplasmic inclusions were dispersed throughout the cytoplasm but were most numerous in the perinuclear cytoplasm. Inclusion were of various sizes, round to oval, and electron dense and were of two general types. Inclusions of the first type were small (0.1-0.5 microm diameter), not surrounded by trilaminar membranes, and granular with indistinct margins that blended with surrounding cytoplasm. Some contained 12+/-2-nm-diameter icosahedral virions in loose aggregates or rarely forming paracrystalline arrays. Small inclusions could be sites of viral assembly or maturation. Intracytoplasmic inclusions of the second type were larger (0.5-5.0 microm diameter) and more numerous and had abrupt margins surrounded by trilaminar membranes. They were more electron dense than small inclusions and were heterogeneous, containing various proportions of aggregated virions, electron-dense crystalline lamellae of 5 nm periodicity, and/or whorls of myelinoid membranes. Virions usually formed paracrystalline arrays and occasionally were loosely aggregated. Larger inclusions were typical of autophagolysosomes. Intranuclear inclusions were not membrane bound and were often associated with reticulated nucleoli or aggregates of heterochromatin. Some inclusions were irregularly shaped aggregates of indistinct, circular 10-12-nm-diameter viruslike particles. Others were 0.1-1.0 microm in diameter, round or ring shaped, dense, and finely granular, with sharply demarcated margins.  (+info)

Observations on pigeon circovirus infection in Ontario. (2/285)

Subclinical pigeon circovirus infection was diagnosed in 1-day-old to 6-week-old birds from a loft with no history of clinical disease. Pigeons from other lofts presented with various illnesses and were found at necropsy to be concurrently infected with pigeon circovirus.  (+info)

Electron microscopical observations of psittacine beak and feather disease in an Umbrella cockatoo (Cacatua alba). (3/285)

Psittacine beak and feather disease (PBFD) was diagnosed in an umbrella cockatoo (Cacatua alba) with severe feather dystrophy and loss. Electron microscopically, the intranuclear and intracytoplasmic inclusion bodies observed by light microscopy were composed of viral particles forming paracrystalline arrays, whorls, semicircles or concentric circles. Recovered viral particles from the skin and feather follicle tracts were icosahedral and 15 to 20 nm in diameter.  (+info)

Detection of porcine circovirus from lesions of a pig with wasting disease in Japan. (4/285)

A wasting disease characterized by progressive weight loss and dyspnea has been observed in weaning pigs on a farm in Yamagata Prefecture in 1998. Histopathologic findings in an affected pig were bronchointerstitial pneumonia and intracytoplasmic clusters of basophilic inclusions in macrophages of lymph nodes, which were similar to those in pigs with postweaning multisystemic wasting syndrome (PMWS) recently reported in North America and Europe. Porcine circovirus (PCV)-like particles were observed in bronchial lymph node of the pig by electron microscopy, and PCV antigens were detected in the lesions by immunohistochemical staining. PCV DNA was also detected in the lung and tonsil by PCR, and restriction fragment length polymorphism analysis of the PCR products with HinfI showed the same type of the PCV associated with PMWS (pmws PCV). Homology of nucleotide sequences between the PCR product and corresponding regions of published pmws PCV genomes was very high. These results indicated that virus detected in this study was pmws PCV. To our knowledge, this is the first report on the presence of pmws PCV in Japan.  (+info)

Multiplex PCR for detection and typing of porcine circoviruses. (5/285)

Sets of oligonucleotide primers were designed according to the sequences of the open reading frames (ORFs) ORF1 and ORF2 of the prototype nonpathogenic PK-15 strain of porcine circovirus (PCV) type 1 (PCV-1). By the PCR performed with the various primer sets, genomic DNA or RNA from other bacterial or viral pathogens of the respiratory tracts of pigs could not be amplified. A positive amplification reaction could be visualized with DNA extracted from a viral suspension containing as few as 10 viral particles per ml. No DNA fragment could be amplified from lysates of continuous porcine cell lines (PT, ST, and PFT cells) known to be negative for PCV. When tested with clinical samples from pigs, the results of the single PCR method showed nearly 93% (13 of 14 samples) correlation with histopathological and immunohistochemical findings. Interestingly, subclinical PCV infections could be detected by single PCR with clinical samples that have been submitted from animals with irrelevant cases of respiratory and/or enteric problems. On the basis of the nucleotide sequences of PCV strains (PCV-2) recently associated with outbreaks of postweaning multisystemic wasting syndrome (PWMS) in Quebec, Canada, pig farms, other primers were designed from the PCV-1 genome, and these primers failed to amplify genomic fragments specific to the ORF1 or ORF2 genes of clinical isolates associated with PWMS but amplified DNA from the PCV-1 strain. Two rapid multiplex PCR (mPCR) methods have been developed to distinguish between both genotypes of PCV. By those two mPCR methods, (i) species-specific primer pairs were used to amplify a DNA fragment of 488 bp specific for the ORF2 genes of both genotypes, whereas a 375-bp fragment was amplified from the ORF1 gene of the PCV-1 strain only, or (ii) species-specific primer pairs were used to amplify a DNA fragment of 646 bp specific for the ORF1 genes of both genotypes, whereas a 425-bp fragment was amplified from the ORF2 gene of the PCV-1 strain only. By both mPCR methods, a PCV-2 infection was demonstrated in tissues of 94.2% (33 of 35) of the sick pigs tested, in agreement with previous findings showing the close association of this new genotype of PCV with outbreaks of PMWS in Europe and North America. On the other hand, a PCV-1 infection was confirmed in only 5.7% (2 of 35) of the pigs, and confirmation of a mixed infection with PCV-2 was obtained by a single PCR with PCV-2-specific primers.  (+info)

PCR detection and characterization of type-2 porcine circovirus. (6/285)

A polymerase chain reaction (PCR) assay was developed for detecting porcine circovirus (PCV). The assay readily detected type-2 PCV (PCV-2) and type-1 PCV (PCV-1). The PCR primers were designed based on DNA sequences conserved in all reported PCV genomes. Type 1 PCV and type 2 PCV both produced 438 bp amplification products, which were easily identified and differentiated from one another by restriction fragment length polymorphism (RFLP) analysis. Porcine circovirus was detected in 55% (931/1693) of randomly tested pigs with various clinical signs and lesions, most of which were difficult to differentiate from those associated with porcine reproductive and respiratory syndrome (PRRS). The PCR products from all positive clinical samples were identified by RFLP to be only PCV-2; DNA tested by PCR was extracted directly from one or more of lung, mesenteric or mediastinal lymph nodes, and tonsil. Type 2 PCV was also detected in 6% (2/34) of DNA extracted directly from semen of randomly chosen healthy boars. Positive PCR reactions from 554 diseased pigs were characterized by RFLP and categorized into 5 different profiles (A-E), of which 82.8% were PCV-2A (456/554), 3.0% were PCV-2B (17/554), 9.9% were PCV-2C (55/554), 1.1% were PCV-2D (6/554), and 3.2% were PCV-2E (18/554). The complete genomic nucleotide sequences of PCV-2A, B, C, D, and E were determined and found to have at least 95% homology compared with one another and with all other PCV-2 found in the GenBank database. All PCV-2 had less than 76% homology with PCV-1. This PCR assay will hopefully be useful to veterinary diagnostic laboratories for routine testing and surveillance of infection with PCV-2. The RFLP profiling system might be useful for preliminary characterization and identification of PCV isolates and might also benefit studies on the molecular epidemiology of PCV.  (+info)

Porcine postweaning multisystemic wasting syndrome in Korean pig: detection of porcine circovirus 2 infection by immunohistochemistry and polymerase chain reaction. (7/285)

This report describes the first diagnosis of porcine circovirus (PCV) infection in weaned pigs with postweaning multisystemic wasting syndrome in Korea by immunohistochemistry and polymerase chain reaction. The most unique lesions were multifocal granulomatous inflammation affecting lymph nodes, liver, and spleen, characterized by infiltrates of epithelioid macrophages and multinucleated giant cells. Circoviral antigen was detected in formalin-fixed sections and was usually present in large, round, dendritic cells in the white pulp of spleen and remnants of follicles in lymph nodes. Lymphoid follicles in the tonsils also contained PCV antigen. A 530-bp DNA fragment of circovirus was successfully amplified from all tested lymph nodes, liver, and spleen.  (+info)

High prevalence of TT virus DNA in human saliva and semen. (8/285)

Using the PCR assay, we found a high prevalence of TT virus (TTV) DNA in saliva and semen from patients who were seropositive for TTV. This finding suggests that the presence of TTV in body fluids other than serum may affect the routes of viral transmission.  (+info)

Circoviridae is a family of small, non-enveloped viruses that infect a wide range of hosts, including birds, pigs, and some primates. The virions of Circoviridae are icosahedral in shape and have a diameter of approximately 20 nanometers. The genome of these viruses is circular, single-stranded DNA that is around 2 kilobases in length.

The family Circoviridae includes two genera: Circovirus and Gyrovirus. Circoviruses are known to infect birds and pigs, while gyroviruses primarily infect birds. The most well-known circovirus is the porcine circovirus (PCV), which can cause a variety of clinical signs in pigs, including respiratory disease, enteritis, and reproductive failure. Gyroviruses, on the other hand, have been associated with various diseases in birds, such as inclusion body hepatitis and lymphoproliferative disease.

It's worth noting that circoviruses have also been detected in humans, although their clinical significance is not yet fully understood. Some studies have suggested a possible link between human circovirus infection and certain diseases, such as cardiovascular disease and diabetes, but more research is needed to confirm these findings.

Circoviridae is a family of small, non-enveloped viruses that infect a wide range of hosts, including animals and birds. The infection caused by circoviruses in animals and birds can result in a variety of symptoms depending on the species infected and the particular circovirus involved.

In pigs, circovirus type 2 (PCV2) is the most well-known member of this family and is associated with a number of clinical conditions, collectively known as porcine circovirus diseases (PCVD). These conditions include postweaning multisystemic wasting syndrome (PMWS), porcine dermatitis and nephropathy syndrome (PDNS), and reproductive failure.

In birds, circoviruses can cause various symptoms such as runting and stunting, feather abnormalities, and immunosuppression, leading to secondary infections. The most well-known avian circovirus is the beak and feather disease virus (BFDV), which infects psittacine birds, including parrots, causing beak deformities, feather loss, and immune suppression.

However, it's important to note that circoviruses are also found in humans, but currently, there is no evidence that human circovirus infections cause disease.

In general, circoviridae infections can be diagnosed through various laboratory tests such as PCR, sequencing, and serology. Treatment typically involves supportive care and management of secondary infections, as there are no specific antiviral therapies available for circovirus infections. Prevention strategies include good biosecurity practices, vaccination, and avoidance of contact with infected animals or their feces.

Torque teno virus (TTV) is a single-stranded DNA virus that belongs to the family Anelloviridae. It was first identified in 1997 and has since been found to be present in the majority of human populations worldwide. The virus is classified into several genotypes and subtypes, with TTV being the prototype member of the genus Alphainellovirus.

TTV is a small virus, measuring only about 30-40 nanometers in diameter. It has a circular genome that ranges in size from 2.8 to 3.9 kilobases and encodes for several non-structural proteins involved in viral replication. The virus does not appear to cause any specific disease symptoms, but it has been associated with various clinical conditions such as liver disease, respiratory tract infections, and cancer.

TTV is primarily transmitted through the fecal-oral route, although other modes of transmission have also been suggested, including saliva, blood, and vertical transmission from mother to child during pregnancy or delivery. The virus has been detected in various body fluids, tissues, and organs, including blood, stool, respiratory secretions, and the liver.

The clinical significance of TTV infection remains unclear, as it is frequently found in both healthy individuals and those with various diseases. However, some studies have suggested that TTV viral load or genotype may be associated with certain clinical conditions, such as liver disease, transplant rejection, and cancer. Further research is needed to better understand the role of TTV in human health and disease.

Circoviruses are a type of small, non-enveloped viruses that belong to the family Circoviridae. They have a single-stranded, circular DNA genome and can infect a wide range of hosts, including birds, pigs, and some mammals. Circoviruses are associated with various diseases in animals, such as porcine circovirus-associated disease (PCVAD) in pigs and beak and feather disease in birds. However, there is currently no evidence to suggest that circoviruses infect or cause disease in humans.

A viral genome is the genetic material (DNA or RNA) that is present in a virus. It contains all the genetic information that a virus needs to replicate itself and infect its host. The size and complexity of viral genomes can vary greatly, ranging from a few thousand bases to hundreds of thousands of bases. Some viruses have linear genomes, while others have circular genomes. The genome of a virus also contains the information necessary for the virus to hijack the host cell's machinery and use it to produce new copies of the virus. Understanding the genetic makeup of viruses is important for developing vaccines and antiviral treatments.

"Identification of a New Cyclovirus in Cerebrospinal Fluid of Patients with Acute Central Nervous System Infections". mBio. 4 (3 ... ICTV Online Report; Circoviridae ICTVdB Entry for Circoviridae Viralzone: Circoviridae (Articles with short description, Short ... Circoviridae is a family of DNA viruses. Birds and mammals serve as natural hosts. There are 101 species in this family, ... The family Circoviridae contains two genera-Circovirus and Cyclovirus. Genus Circovirus: type species: Porcine circovirus 1 ...
The overall infection rate was 33.29%. Ducks at 3-4 weeks of age where more susceptible to DuCV virus. Anas platyrhynchos, ... DuCV has been clustered in the Circoviridae family genus Circovirus, according to the eighth report of the International ... Infection with DuCV appears to cause growth disorders in ducks as well as eventual immunosuppression due to depletion of ... Articles with short description, Short description matches Wikidata, Articles with 'species' microformats, Circoviridae, ...
Animal viruses in Circoviridae are associated with many diseases, including respiratory illness, intestinal illness, and ... Parvoviruses are most widely known for causing a lethal infection in canids as well as causing fifth disease in humans. ... Centuries later, a circovirus infection that caused balding in birds was observed in Australia in 1888, marking the first ... Circoviridae Family: Vilyaviridae Order: Cremevirales Family: Smacoviridae Order: Mulpavirales Family: Amesuviridae Family: ...
For example, some protect against infection with related viruses. In some mammal groups, including higher primates, retroviral ... Bornaviridae and Circoviridae families of viruses, >100 million years in the Flaviviridae, and 12 million years for the ...
... viral infection, avian polyomavirus infection, adenovirus infection and herpesvirus infection in psittacine tissues using DNA ... The beak and feather disease virus (BFDV) is currently considered a member of the family Circoviridae. Like other circoviruses ... or parasitic infections often occur as a result of diminished immunity caused by a PBFD viral infection. Clinical signs in ... are generally due to secondary infections and may not be directly related to PBFD virus infections. Furthermore, not all ...
Zheng, MY; Lin, Y; Li, DJ; Ruan, HB; Chen, Y; Wu, TT (2010). "TTV and HPV co-infection in cervical smears of patients with ... While bearing some similarity to members of the group Circoviridae, it lacks sequence homology with any known viruses. It is ... Infection with these viruses tends to lead to lifelong viraemia and their possible association with disease remains under ... Despite that the link between TTV infection and a given pathology has not been shown, the hypothesis of a relation between ...
In older chickens, an infection with no apparent symptoms may cause reduced growth rates due to a poor feed conversion ratio. ... Markey, B; Leonard, F; Archambault, M; Cullinane, A; Maguire, D (2013). "Chapter 46: Circoviridae". Clinical veterinary ... Clinical signs of CAV infection are predominantly found in young chicks due to vertical transmission from the breeder hens ... Quinn, PJ; Markey, BK; Leonard, FC; Fitzpatrick, ES; Fanning, S (2015). "Chicken anaemia virus infection". Concise Review of ...
These animals have been noted to show high susceptibility to airway infections, but very little is known about their ... in particular the Circoviridae, members of the Parvoviridae , and a family of RNA viruses, the Tombusviridae. Suzuki A, Ueda K ... which tend to colonize but without causing the onset of infection. But during periods of immunosuppression these organisms can ...
... is a genus of viruses, in the family Circoviridae. Birds (such as pigeons and ducks) and pigs serve as natural hosts ... Marlier, D; Vindevogel, H (July 2006). "Viral infections in pigeons". Veterinary Journal. 172 (1): 40-51. doi:10.1016/j.tvjl. ...
Co-infections are also a common occurrence in animals afflicted with CaCV. Canine distempter and parvovirus (genotype 2) were ... It is a member of the Circoviridae family and the genus Circovirus. There are currently 11 species of known circoviruses that ... Two dogs died within a week of infection while the others were ill but able to recover. One of the bodies underwent laboratory ... Within the group of dogs that tested positive for CaCV, 68% of them had other co-infections of varying illnesses. There have ...
It then injects its DNA or RNA into the host to initiate infection. In animal cells these viruses get into the cell through the ... Two examples include the Circoviridae and Parvoviridae. They replicate within the nucleus, and form a double-stranded DNA ... Viral replication is the formation of biological viruses during the infection process in the target host cells. Viruses must ... The Effects of Viral Infections and Viral Insulins on Host Metabolism". Annual Review of Virology. 8 (1): 373-391. doi:10.1146/ ...
However, viral infection by itself tends to cause only mild disease, and co-factors such as other infections or ... Circoviridae, Animal viral diseases, Unaccepted virus taxa, Swine diseases). ... For example, concurrent infection with porcine parvovirus or PRRS virus, or immunostimulation lead to increased replication of ... Testing of the other licensed vaccine against rotavirus infection, RotaTeq, also detected some components of both PCV-1 and PCV ...
Aditi; Shariff, M. (2019). "Nipah virus infection: A review". Epidemiology and Infection. 147: e95. doi:10.1017/ ... Circoviruses, family Circoviridae, are among the most diverse of all viruses. Like anelloviruses, circoviruses are not ... In late 2012, a vaccine was released to prevent infection in horses. Vaccine uptake has been low, with an estimated 11-17% of ... Bats' immune systems may have evolved to be more tolerant of stressors such as viral infections compared to other mammals. The ...
Most viral infections of humans and other animals have incubation periods during which the infection causes no signs or ... The smallest-the ssDNA circoviruses, family Circoviridae-code for only two proteins and have a genome size of only two ... The presence of IgM in the blood of the host is used to test for acute infection, whereas IgG indicates an infection sometime ... Smallpox infections have been eradicated. Vaccines are available to prevent over thirteen viral infections of humans, and more ...
However, viral infection by itself tends to cause only mild disease, and co-factors such as other infections or ... Circoviridae). ... Wasting pigs is the most common sign of PMWS infection, ... Experimental induction of PMWS has not been achieved by PCV-2 infection alone, using infectious DNA clones of the virus or a ... Many pigs affected by the circovirus also seem to develop secondary bacterial infections, like Glässer disease (Haemophilus ...
... infection status), and its specific role if in a multicellular organism. Gene expression can be regulated at any step: from ... the parvoviridae and circoviridae are more than 40 to 50 million years old". Journal of Virology. 84 (23): 12458-62. doi: ...
"Identification of a New Cyclovirus in Cerebrospinal Fluid of Patients with Acute Central Nervous System Infections". mBio. 4 (3 ... ICTV Online Report; Circoviridae ICTVdB Entry for Circoviridae Viralzone: Circoviridae (Articles with short description, Short ... Circoviridae is a family of DNA viruses. Birds and mammals serve as natural hosts. There are 101 species in this family, ... The family Circoviridae contains two genera-Circovirus and Cyclovirus. Genus Circovirus: type species: Porcine circovirus 1 ...
Circoviridae, Flaviviridae, Herpesviridae, Paramyxoviridae, Parvoviridae, Pheuiviridae, and Rhabdoviridae viral families. ... a proxy for the putative natural route of infection) (27). This experimental H5N1 infection of foxes resulted in severe ... Naturally occurring influenza infection in a ferret (Mustela putorius furo) colony. J Vet Diagn Invest. 2009;21:527-30. DOI ... a common infection that causes severe illness and potentially increases susceptibility to other infections, although ...
... we identified 1,011 sequences corresponding to the capsid and Rep genes from the Circoviridae family. From a plasma sample ... bronchopulmonary infections, and parvovirus B19 and COVID-19 infections. In November 2021, 14 months after receiving pulsed ... Opriessnig T, Prickett JR, Madson DM, Shen HG, Juhan NM, Pogranichniy RR, et al. Porcine circovirus type 2 (PCV2)-infection and ... Central nervous system infections after solid organ transplantation. Curr Opin Infect Dis. 2021;34:207-16. DOIPubMedGoogle ...
Adenoviridae Infections. *African Swine Fever. *Circoviridae Infections. *Hepadnaviridae Infections. *Herpesviridae Infections ... "Hepadnaviridae Infections" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical ... This graph shows the total number of publications written about "Hepadnaviridae Infections" by people in this website by year, ... Below are the most recent publications written about "Hepadnaviridae Infections" by people in Profiles. ...
Circoviridae Infections , Circovirus , Matrines , Animals , Mice , Apoptosis , Circoviridae Infections/drug therapy , ... Circoviridae Infections/pathology , Endoplasmic Reticulum Chaperone BiP , Matrines/pharmacology , Ribavirin/pharmacology , ... Viral infections such as SARS-CoV2 are associated with endoplasmic reticulum (ER) stress and also increased the level of ... In this study, we reported that SADS-CoV infection could induce a complete autophagy process both in vitro and in vivo, and an ...
Infecções por Circoviridae/epidemiologia , Circoviridae/genética , Infecções Comunitárias Adquiridas/epidemiologia , Infecções ... The use of nasal corticosteroids may increase the risk of CARV infection. CARV infections did not impact outcomes. ... CARV infections did not impact the lung functions during the first year or the CLAD-free survival at 3 years. CONCLUSIONS: ... Nosocomial infection was defined as a positive swab after 7 days of admission. In total, one hundred and seventy-three patients ...
In reality, each creature has 10 continuing virus infections at any particular time. Human infections include, at the least, ... along with Circoviridae households. Even the norovirus as well as also the reovirus are very common. Others, such as polio are ... The very first infection of every type is a whole lot more challenging for the virus, whereas formerly recognized its far ... Parasitic infections may discontinue CD8 T cells from killing viruses. These worms reduce the capacity to restrict herpes. The ...
Adenoviridae Infections. *African Swine Fever. *Circoviridae Infections. *Hepadnaviridae Infections. *Herpesviridae Infections ... Dela Cruz CS, Pasnick S, Gross JE, Keller J, Carlos WG, Cao B, Jamil S. Adenovirus Infection and Outbreaks: What You Need to ... "Adenoviridae Infections" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical ... This graph shows the total number of publications written about "Adenoviridae Infections" by people in this website by year, ...
Adenoviridae Infections. *African Swine Fever. *Circoviridae Infections. *Hepadnaviridae Infections. *Herpesviridae Infections ... "Herpesviridae Infections" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical ... This graph shows the total number of publications written about "Herpesviridae Infections" by people in this website by year, ... Below are the most recent publications written about "Herpesviridae Infections" by people in Profiles. ...
... from clinically suspected flocks and diseased birds in six provinces of northern Vietnam were tested for DuCV infection. The ... Zhang X, Jiang S, Wu J, Zhao Q, Sun Y, Kong Y, Li X, Yao M, Chai T (2009) An investigation of duck circovirus and co-infection ... DuCV belongs to the genus Circovirus, which is a member of the family Circoviridae. DuCV is icosahedral, non-enveloped, and ... Cha SY, Song ET, Kang M, Wei B, Seo HS, Roh JH, Yoon RH, Moon OK, Jang HK (2014) Prevalence of duck circovirus infection of ...
Therefore, epidemiological investigations of CAV infection and/or the evaluation of the immunization status of chickens is ... and their use in the development of diagnostic kit would be useful for CAV infection prevention. Three CAV viral proteins VP1, ... of viral proteins during serological testing for CAV infection has never been performed. The expression, production and ... Generally, CAV infection occurs via vertical transmission in young chicks that are less than two weeks old, which are very ...
"Because that infection is not localized to the gastrointestinal tract, and Strep suis spreads systemically after it colonizes ... Though both PCV2 and PCV3 fall under the same broad virus family, Circoviridae, they share less than half of their genetic ... Strep suis infection in nursery pigs is often a function of combined factors: primarily, concurrent viral disease, ventilation ... PCV2 has the ability to re-combine, and co-infection of more than one PCV2 has been reported in Canadian diagnostic lab data. ...
... indicating immediate infection post-partum or possibly transplacental infection.. Publicerad i. PLoS ONE. 2016, Volym: 11, ... Circoviridae, Picornaviridae, and Reoviridae). It was not possible to associate a particular virus family with the investigated ... Circoviridae, Parvoviridae, Picornaviridae, and Reoviridae) compared to four in the pooled diarrhoeic samples (Anelloviridae, ...
... inactivated and live-attenuated chimeric PCV1-2b vaccines were effective to induce protective immunity against PCV2b infection. ... Comparison of efficacy of commercial one dose and two dose PCV2 vaccines using a mixed PRRSV-PCV2-SIV clinical infection model ... nonenveloped virus with a single-strand circular DNA genome of 1.7 kb in the family Circoviridae [6]. Two genotypes of PCV have ... Differences in virulence among porcine circovirus type 2 isolates are unrelated to cluster type 2a or 2b and prior infection ...
... the parvoviridae and circoviridae are more than 40 to 50 million years old. Journal of virology, 84 (23), 12458-62 PMID: ... suggested that synthesis of the bornaviral N protein from endogenous sequences might render the host resistant to infection ...
Only in cell culture has PCV3 been isolated (PK-15 cells). A few animals infected with PCV-2 may have a long-term infection. ... Porcine circoviruses (PCVs), as members of the Circovirus genus of the Circoviridae family, have been linked to a variety of ...
Background: Enterovirus (EV) infections are associated with a broad range of diseases. Since the first experimental infection ... The cressdnaviruses found in this study belong to the Circoviridae, Genomoviridae and Smacoviridae families as well as ... Background: Enterovirus (EV) infections are associated with a broad range of diseases. Since the first experimental infection ... However, VP1, viral RNA and the eGFP were absent in the GCs of PPs at all stages of infection irrespective of the virus strains ...
Due to the dependence of EBV infection on cell line permissivity we determined the correlation of EBV seropositivity and TTV ... and all TTV positive samples also showed evidence of EBV infection. In serum samples (n=100), TTV DNA was only found in ... replicating TTV DNA based on the replication pattern of chicken anemia virus of the same Circoviridae family, which was used in ... replicating TTV DNA based on the replication pattern of chicken anemia virus of the same Circoviridae family, which was used in ...
Co-infection rate. All PCV2-PCR positive samples were measured for the co-infection status of PRRSV, CSFV, PRV and PEDV. They ... which belong to the member of genus Circovirus within the family of Circoviridae [1]. PCVs includes PCV1, PCV2, and PCV3. PCV1 ... Co-infection of viruses plays a critically important role in animal disease management and control in the field [14, 17]. ... Sun J, Huang L, Wei Y, Wang Y, Chen D, Du W, Wu H, Liu C. Prevalence of emerging porcine parvoviruses and their co-infections ...
Veterinary microbiology and microbial diseases Second Edition P.J. Quinn ...
Infecções por Circoviridae/epidemiologia , Infecções por Circoviridae/genética , Infecções por Circoviridae/veterinária , ... Furthermore, co-infection of different PCV2 genotype strains was identified in three samples (JZ-4, KF-2 and JY-1), and a cross ... Infecções por Circoviridae , Circovirus , Doenças dos Suínos , Animais , China , Infecções por Circoviridae/diagnóstico , ... Infecções por Circoviridae/epidemiologia , Infecções por Circoviridae/virologia , Coinfecção/epidemiologia , Coinfecção/ ...
Infection with anelloviruses is not restricted to human hosts. Viruses have been detected in non-human primates (chimpanzee, ... within Circoviridae and Nanoviridae), suggests that replication of anellovirus DNA may use a rolling circle mechanism of ... The link between anellovirus infection and a specific pathology remains unproven, although some studies suggested possible ... and might play some role in maintaining persistent viral infection. It was also demonstrated that a short TTV peptide, encoded ...
Cross Infection C23.550.291.875.500 Cross-Priming G12.425.260 Crowns E6.323.428.100 E6.780.346.250 E6.323.528.250 E7.695.190.88 ... Circoviridae B4.909.204.120 Circovirus B4.909.204.120.150 Cistanche B1.650.940.800.575.100.788.500 B1.650.940.800.575.100. ... Tumor Virus Infections C4.619.935 C4.925 Tungrovirus B4.715.835 Tunica Intima A7.231.330.800 A10.272.491.355.800 Tunica Media ... Epstein-Barr Virus Infections C4.619.935.313 C4.925.313 Erbium D1.268.477.437 Erbovirus B4.909.777.618.290 Erectile Dysfunction ...
Cross Infection C23.550.291.875.500 Cross-Priming G12.425.260 Crowns E6.323.428.100 E6.780.346.250 E6.323.528.250 E7.695.190.88 ... Circoviridae B4.909.204.120 Circovirus B4.909.204.120.150 Cistanche B1.650.940.800.575.100.788.500 B1.650.940.800.575.100. ... Tumor Virus Infections C4.619.935 C4.925 Tungrovirus B4.715.835 Tunica Intima A7.231.330.800 A10.272.491.355.800 Tunica Media ... Epstein-Barr Virus Infections C4.619.935.313 C4.925.313 Erbium D1.268.477.437 Erbovirus B4.909.777.618.290 Erectile Dysfunction ...
Cross Infection C23.550.291.875.500 Cross-Priming G12.425.260 Crowns E6.323.428.100 E6.780.346.250 E6.323.528.250 E7.695.190.88 ... Circoviridae B4.909.204.120 Circovirus B4.909.204.120.150 Cistanche B1.650.940.800.575.100.788.500 B1.650.940.800.575.100. ... Tumor Virus Infections C4.619.935 C4.925 Tungrovirus B4.715.835 Tunica Intima A7.231.330.800 A10.272.491.355.800 Tunica Media ... Epstein-Barr Virus Infections C4.619.935.313 C4.925.313 Erbium D1.268.477.437 Erbovirus B4.909.777.618.290 Erectile Dysfunction ...
Cross Infection C23.550.291.875.500 Cross-Priming G12.425.260 Crowns E6.323.428.100 E6.780.346.250 E6.323.528.250 E7.695.190.88 ... Circoviridae B4.909.204.120 Circovirus B4.909.204.120.150 Cistanche B1.650.940.800.575.100.788.500 B1.650.940.800.575.100. ... Tumor Virus Infections C4.619.935 C4.925 Tungrovirus B4.715.835 Tunica Intima A7.231.330.800 A10.272.491.355.800 Tunica Media ... Epstein-Barr Virus Infections C4.619.935.313 C4.925.313 Erbium D1.268.477.437 Erbovirus B4.909.777.618.290 Erectile Dysfunction ...
Cross Infection C23.550.291.875.500 Cross-Priming G12.425.260 Crowns E6.323.428.100 E6.780.346.250 E6.323.528.250 E7.695.190.88 ... Circoviridae B4.909.204.120 Circovirus B4.909.204.120.150 Cistanche B1.650.940.800.575.100.788.500 B1.650.940.800.575.100. ... Tumor Virus Infections C4.619.935 C4.925 Tungrovirus B4.715.835 Tunica Intima A7.231.330.800 A10.272.491.355.800 Tunica Media ... Epstein-Barr Virus Infections C4.619.935.313 C4.925.313 Erbium D1.268.477.437 Erbovirus B4.909.777.618.290 Erectile Dysfunction ...
Circoviridae - Clavaviridae - Closteroviridae - Corticoviridae - Cystoviridae - Endornaviridae - Flaviviridae - Fuselloviridae ... Topley and Wilsons Microbiology and Microbial Infections ninth edition, Volume 1, Virology, volume editors: Mahy, Brian and ...
Equid herpesvirus 1 and equid herpesvirus 4 infections * Equid gammaherpesvirus 2 and equid gammaherpesvirus 5 infections (15 ... GENERAL INTRODUCTION: CIRCOVIRIDAE AND ANELLOVIRIDAE * Post-weaning multi-systemic wasting syndrome in swine (13 Aug 2018) ...
... secondary infections and death in susceptible stock. The diseases in sheep and goats are caused by strains of capripoxvirus ... GENERAL INTRODUCTION: CIRCOVIRIDAE AND ANELLOVIRIDAE. *Post-weaning multi-systemic wasting syndrome in swine ... but it is not known whether these scabs could remain a source of infection; certainly, it is difficult to recover live virus on ...
  • Sequences from ancestral single-stranded DNA viruses in vertebrate genomes: the parvoviridae and circoviridae are more than 40 to 50 million years old. (virology.ws)
  • Consequently, Adenoviridae, Circoviridae, Retroviridae, and Parvoviridae were identified in oral samples from Protobothrops mucrosquamatus, Elaphe dione, and Gloydius angusticeps based on sequence similarity to existing viruses. (bvsalud.org)
  • The family Circoviridae contains two genera-Circovirus and Cyclovirus. (wikipedia.org)
  • Genus Circovirus: type species: Porcine circovirus 1 Genus Cyclovirus : type species Human associated cyclovirus 8 A cyclovirus-cyclovirus-Vietnam-has been isolated from the cerebrospinal fluid of 25 Vietnamese patients with CNS infections of unknown aetiology. (wikipedia.org)
  • DuCV belongs to the genus Circovirus, which is a member of the family Circoviridae . (researchsquare.com)
  • Porcine circovirus (PCV) is a small, nonenveloped virus with a single-strand circular DNA genome of 1.7 kb in the family Circoviridae [ 6 ]. (biomedcentral.com)
  • Porcine circoviruses (PCVs), as members of the Circovirus genus of the Circoviridae family, have been linked to a variety of pig disease conditions, including porcine dermatitis and nephropathy syndrome (PDNS), respiratory disease, postweaning multisystemic wasting syndrome, and reproductive disorders. (creative-biolabs.com)
  • Porcine Circoviruses (PCVs) are single-standard circular DNA virus, which belong to the member of genus Circovirus within the family of Circoviridae [ 1 ]. (biomedcentral.com)
  • Chicken anemia virus (CAV) is the member of the genus Gyrovirus of the family Circoviridae , and the genome consists of a circular single-stranded 2.3 kb DNA molecule [ 1 ]. (biomedcentral.com)
  • Adenoviridae Infections" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (ucdenver.edu)
  • This graph shows the total number of publications written about "Adenoviridae Infections" by people in this website by year, and whether "Adenoviridae Infections" was a major or minor topic of these publications. (ucdenver.edu)
  • Below are the most recent publications written about "Adenoviridae Infections" by people in Profiles. (ucdenver.edu)
  • The presence within ORF1 of conserved amino acid sequence motifs, which occur in the Rep proteins of other animal and plant viruses with circular ssDNA genomes (within Circoviridae and Nanoviridae ), suggests that replication of anellovirus DNA may use a rolling circle mechanism of replication. (ictv.global)
  • Viruses in the family Circoviridae are non-enveloped, with icosahedral and round geometries, and T=1 symmetry. (wikipedia.org)
  • Circoviridae is a family of DNA viruses. (wikipedia.org)
  • Thus, GRP78 inhibition may be a promising approach to augment existing therapies to block SARS-CoV-2, its variants, and other viruses that utilize GRP78 for entry and infection. (bvsalud.org)
  • The results do, however, indicate that known mammalian viruses were present in the intestine as early as 24-48 hours after birth, indicating immediate infection post-partum or possibly transplacental infection. (slu.se)
  • We developed an assay to detect double stranded (ds) replicating TTV DNA based on the replication pattern of chicken anemia virus of the same Circoviridae family, which was used in a novel in vitro TTV culture system. (ox.ac.uk)
  • Infection in the seals manifested as seizures, and immunohistochemical and molecular testing on postmortem samples detected a neurologic distribution of viral products. (cdc.gov)
  • Among transplant recipients, it is especially critical to detect infection, often viral, to prevent unnecessary interruption of treatment. (cdc.gov)
  • In this study, we investigated the efficacy of YUM70, a small molecule inhibitor of GRP78, to block SARS-CoV-2 viral entry and infection in vitro and in vivo. (bvsalud.org)
  • Furthermore, YUM70 reduced SARS-CoV-2 infection without impacting cell viability in vitro and suppressed viral protein production following SARS-CoV-2 infection. (bvsalud.org)
  • Up to the present, systematically assessing viral protein antigenicity and/or determining the immunorelevant domain(s) of viral proteins during serological testing for CAV infection has never been performed. (biomedcentral.com)
  • The expression, production and antigenic characterization of CAV viral proteins such as VP1, VP2 and VP3, and their use in the development of diagnostic kit would be useful for CAV infection prevention. (biomedcentral.com)
  • ORF3 of TTVs has a serine-rich domain at the C-terminus capable of generating different phosphorylation sites, and might play some role in maintaining persistent viral infection. (ictv.global)
  • Susceptibility to acute mouse adenovirus type 1 respiratory infection and establishment of protective immunity in neonatal mice. (ucdenver.edu)
  • The results demonstrated that both inactivated and live-attenuated chimeric PCV1-2b vaccines were effective to induce protective immunity against PCV2b infection. (biomedcentral.com)
  • Solid organ transplant recipients are highly susceptible to infections that sometimes have uncommon clinical manifestations ( 1 - 3 ). (cdc.gov)
  • Generally, CAV infection occurs via vertical transmission in young chicks that are less than two weeks old, which are very susceptible to the disease. (biomedcentral.com)
  • Sheep- and goatpox are malignant systemic pox diseases of sheep and goats characterized by fever, macules developing into papules and necrotic lesions in the skin and nodular lesions in internal organs, secondary infections and death in susceptible stock. (anipedia.org)
  • The link between anellovirus infection and a specific pathology remains unproven, although some studies suggested possible associations with liver or respiratory diseases, hematological disorders or cancer. (ictv.global)
  • The detection rates of PCV4 and PRRSV were 8.00% (12/150) and 12.00% (18/150) respectively, and a case of co-infection with PCV4 and PRRSV was found in the lung tissue of a suckling pig with respiratory symptom. (bvsalud.org)
  • At present, PCV4 infection has been detected in China and South Korea. (bvsalud.org)
  • In this study, we reported that SADS-CoV infection could induce a complete autophagy process both in vitro and in vivo, and an inhibition of autophagy significantly decreased SADS-CoV production, thus suggesting that autophagy facilitated the replication of SADS-CoV. (bvsalud.org)
  • Five swans had onset of highly pathogenic avian influenza virus infection while in captivity. (cdc.gov)
  • Resultados: Las manifestaciones clínicas y los hallazgos de la radiografía de tórax fueron similares en las neumonías causadas por diferentes patógenos respiratorios: bacterias clásicas, virus respiratorios y microorganismos atípicos. (bvsalud.org)
  • Timeline of the disease event, in which encephalitis and death in wild mammals at a rehabilitation center occurred after systemic infection with highly pathogenic avian influenza A subtype H5N8, United. (cdc.gov)
  • COVID-19 is caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, which caused the pandemic since the first outbreak in late December 2019. (bvsalud.org)
  • COVID-19, resulting from the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)infection, is an unprecedented public health emergency which has directly caused hundreds of thousandsof deaths around the world and put health systems under immense pressure and stretched them beyondtheir capacity. (immune-tech.com)
  • In the present study, tissue samples collected from a total of 130 commercial ducks collected from clinically suspected flocks and diseased birds in six provinces of northern Vietnam were tested for DuCV infection. (researchsquare.com)
  • TTV DNA was detected in PBMNCs of 13 of 18 healthy bone marrow donors, and all TTV positive samples also showed evidence of EBV infection. (ox.ac.uk)
  • [7] There is no evidence of human infection or any disease associated with BAV. (wikimili.com)
  • dangerous and exotic agents that pose a high individual risk of aerosol-transmitted laboratory infections and life-threatening disease that is frequently fatal, for which there are no vaccines or treatments, or a related agent with unknown risk of transmission. (absa.org)
  • Prostaglandin E2 production during neonatal respiratory infection with mouse adenovirus type 1. (ucdenver.edu)
  • Prostaglandin E2 Production and T Cell Function in Mouse Adenovirus Type 1 Infection following Allogeneic Bone Marrow Transplantation. (ucdenver.edu)
  • Preparation of pancreatic acinar cells for the purpose of calcium imaging, cell injury measurements, and adenoviral infection. (ucdenver.edu)
  • Due to the dependence of EBV infection on cell line permissivity we determined the correlation of EBV seropositivity and TTV DNA detection in healthy blood donors. (ox.ac.uk)
  • Our results show that TTV replicates in hematopoietic cells, particularly B cells, and our data from both cell lines and patient studies suggest that TTV may require a helper viras, such as EBV, for productive infection. (ox.ac.uk)
  • The 78-kDa glucose-regulated protein (GRP78) is a major endoplasmic reticulum (ER) chaperone that has been recently implicated as an essential host factor for SARS-CoV-2 entry and infection. (bvsalud.org)
  • This proof-of-concept diagnostic approach demonstrates a way to distinguish pneumonia etiology based solely on the host proteolytic response to infection. (bvsalud.org)
  • For example, it has been suggested that synthesis of the bornaviral N protein from endogenous sequences might render the host resistant to infection with bornaviruses. (virology.ws)
  • Next-generation sequencing was used for discovery and de novo assembly of a novel, highly divergent DNA virus at the interface between the Parvoviridae and Circoviridae. (nih.gov)
  • Sequences from ancestral single-stranded DNA viruses in vertebrate genomes: the parvoviridae and circoviridae are more than 40 to 50 million years old. (virology.ws)
  • acute respiratory infections in felines, rabbit hemorrhagic disease, and some cases of gastroenteritis in humans. (doctorinternet.com)
  • Coronavirus disease 2019 (COVID-19), primarily a respiratory disease caused by infection with Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), is often accompanied by gastrointestinal symptoms. (bvsalud.org)
  • There was no other association between the presence of HGV, TTV, or SENV infection and patient characteristics or severity and outcome of disease. (medscape.com)
  • dangerous and exotic agents that pose a high individual risk of aerosol-transmitted laboratory infections and life-threatening disease that is frequently fatal, for which there are no vaccines or treatments, or a related agent with unknown risk of transmission. (absa.org)
  • This study reports for the first time the natural infection of a cat in France (near Paris) probably through their owners. (authorea.com)
  • Solid organ transplant recipients are highly susceptible to infections that sometimes have uncommon clinical manifestations ( 1 - 3 ). (cdc.gov)
  • Previous research has identified a relationship between climate and occurrence of SARS-CoV and MERS-CoV cases, information that can be used to reduce the risk of infection. (authorea.com)