• The family Reoviridae is divided into 9 genera, 4 of which-Orthoreovirus, Coltivirus, Rotavirus, and Orbivirus -can infect humans and animals. (medscape.com)
  • The virions of Reoviridae family viruses measure 60-80 nm in diameter and possess 2 concentric capsid shells, each of which is icosahedral. (medscape.com)
  • Reoviruses (which also are called orthoreoviruses to avoid confusion with the family Reoviridae) are nonenveloped viruses. (medscape.com)
  • Florio and others (3) in 1946 from human serum by injec- ertebrate viruses belonging to the family Reoviridae tion into adult hamsters. (cdc.gov)
  • Coltivirus is a genus of viruses (belonging to the Reoviridae family) that infects vertebrates and invertebrates. (wikipedia.org)
  • Coltivirus is in the family Reoviridae, which contains eight genera. (wikipedia.org)
  • CTF is an acute, febrile, usually benign systemic illness caused by a coltivirus in the family Reoviridae and transmitted by a tick bite. (unboundmedicine.com)
  • CTF is caused by CTF virus, a double-stranded RNA coltivirus in the family Reoviridae. (unboundmedicine.com)
  • Reoviridae is a family of viruses that can affect the gastrointestinal system (such as Rotavirus ) and respiratory tract . (wikidoc.org)
  • Viruses in the family Reoviridae have genomes consisting of segmented, double-stranded RNA (dsRNA). (wikidoc.org)
  • Even though viruses in the Reoviridae family have more recently been identified with various diseases, the original name is still used. (wikidoc.org)
  • The genomes of viruses in Reoviridae contain 10-12 segments which are grouped into three categories corresponding to their size: L (large), M (medium) and S (small). (wikidoc.org)
  • The household Reoviridae is a nonenveloped virus group with a double-stranded (ds) RNA genome comprising 9 to 12 segments. (bioconstructor.com)
  • Kirusi Rota A ni kimoja wapo kwenye genus ya Rota virus na familia ya Reoviridae. (ulyclinic.com)
  • Although almost 100 orbivirus serotypes are known, only 3 serotypes of orthoreovirus and 2 of coltivirus have been identified. (medscape.com)
  • Coltivirus and Orbivirus together contain about 109 serotypes, and only four of these cause human disease. (wikipedia.org)
  • Characterization of Novel Reoviruses [Wad Medani virus (Orbivirus) and Kundal (Coltivirus)] collected from Hyalomma antolicum ticks in India during CCHF surveillance. (cdc.gov)
  • Many mosquitoborne viruses were also genus, Banna virus (BAV), has been isolated from many considered tentative species in this genus, including Banna mosquito species, humans with encephalitis, pigs, and cat- virus (BAV) from humans. (cdc.gov)
  • Since then, the virus took on some differences, and is now considered its own species of virus. (wikipedia.org)
  • European Eyach virus was isolated in 1976 from Ixodes ricinus ticks in Europe and in 1981 from the same species along with Ixodes ventalloi in 1981. (wikipedia.org)
  • The following five species are assigned to the genus: Colorado tick fever coltivirus Eyach coltivirus Kundal coltivirus Tai Forest coltivirus Tarumizu coltivirus The Coltivirus virions are about 60-80 nanometers in diameter and are not enveloped, and are generally a spherical shape with icosahedral symmetry. (wikipedia.org)
  • arthropod-borne virus) applies to any virus that is transmitted to humans and/or other vertebrates by certain species of blood-feeding arthropods, chiefly insects (flies and mosquitoes) and arachnids (ticks). (msdmanuals.com)
  • The oropouche virus is transmitted to humans by Culicoides paraensis , a species of biting midges (small flying insects) present in South and Central America and the Caribbean. (msdmanuals.com)
  • coltivirus (CTFV-Ca), which is considered a serotype of CTFV-Ca, identified as strain S6-14-03, was isolated from CTFV, Eyach virus (EYAV), which is distinct from CTFV, the blood of the white hare, L. californicus , in California and Salmon River virus (SRV), which may be a serotype (outside the range of D. andersoni ) (6). (cdc.gov)
  • CTFV is transmitted by the wood tick D. andersoni , but other ticks such as D. occidentalis , D. albopictus , D. arumapertus , Haemaphysalis leporispalustris , Otobius lagophilus , Ixodes sculptus , and I. spinipalpis are also infected with the virus. (cdc.gov)
  • Another coltivirus, Eyach virus, has been from humans and ticks, EYAV isolated from ticks, CTFV- isolated from ticks in France and Germany and incriminat- ed in febrile illnesses and neurologic syndromes. (cdc.gov)
  • The European Eyach virus and the Colorado tick fever virus are known relatives due to cognate genes, 55% to 88% of amino acid similarity, and similarities at the microscopic level that cannot be distinguished. (wikipedia.org)
  • One theory of how the European Eyach virus is proposed to have come about in Europe is by the migration of lagomorphs from North America over fifty million years ago. (wikipedia.org)
  • The virus was adapted to egg and and having 12-segmented dsRNA genomes at one mice, and suckling mice became the routine isolation sys- time were classified in the genus Coltivirus (Colorado tick tem for CTFV (3-5). (cdc.gov)
  • DNA viruses have genomes consisting of deoxyribonucleic acid (or DNA), while RNA viruses, like Coltivirus, have an RNA (ribonucleic acid) genome, which is segmented (multipartite). (wikipedia.org)
  • Virus 1 quesito Minute infectious agents whose genomes are composed of DNA or RNA, but not both. (lookformedical.com)
  • Since these viruses have dsRNA genomes, replication occurs exclusively in the cytoplasm and the virus encodes several proteins which are needed for replication and conversion of the dsRNA genome into (+)-RNAs. (wikidoc.org)
  • In 2003, the virus was reisolated from I. ricinus ticks in Germany (10). (cdc.gov)
  • Ticks are both vector and virus reservoir, and small rodents are the primary amplifying host. (msdmanuals.com)
  • Viral architecture is very complex, but every virus contains at least a genome and a capsid. (unboundmedicine.com)
  • The 400 known viruses are classified in several ways: by genome core (RNA or DNA), host (animals, plants, or bacteria), method of reproduction (such as retrovirus), mode of transmission (such as enterovirus), and disease produced (such as hepatitis virus). (unboundmedicine.com)
  • Virus Incompleti 0 domande Viruses which lack a complete genome so that they cannot completely replicate or cannot form a protein coat. (lookformedical.com)
  • Provirus 0 domande Duplex DNA sequences in eukaryotic chromosomes, corresponding to the genome of a virus, that are transmitted from one cell generation to the next without causing lysis of the host. (lookformedical.com)
  • Virus Riassortanti 0 domande Viruses containing two or more pieces of nucleic acid (segmented genome) from different parents. (lookformedical.com)
  • Some of the most virulent diseases are caused by viruses, e.g., the hemorrhagic fever caused by Ebola virus. (unboundmedicine.com)
  • New viruses are then released either by destroying their host cell or by forming small buds that break off and infect other cells. (unboundmedicine.com)
  • CTF virus is thought to infect hematopoietic cells, causing leukopenia and prolonged viremia for up to 3 to 4 months. (unboundmedicine.com)
  • Chikungunya virus, a mosquito-borne alphavirus, causes acute febrile illness with polyarthralgia. (cdc.gov)
  • Mayaro virus is an alphavirus in the Togavirus family. (msdmanuals.com)
  • Everglades virus (EVEV) is subtype II of the Venezuelan equine encephalitis virus (VEEV) complex (Togaviridae: Alphavirus), endemic to Florida, USA. (bioone.org)
  • Serious animal pathogens include bluetongue virus of sheep and African horse sickness virus. (medscape.com)
  • Tickborne vertebrate viruses include CTFV isolated complications. (cdc.gov)
  • Sequence analyses and structural predictions of double-stranded RNA segment S1 and VP7 from United States prototype bluetongue virus serotypes 13 and 10. (umassmed.edu)
  • A non-taxonomic designation for viruses that can replicate in both vertebrate hosts and arthropod vectors. (lookformedical.com)
  • A family of unenveloped RNA viruses with cubic symmetry. (umassmed.edu)
  • ABBR: AAV A genus in the parvovirus family whose members cannot replicate without the presence of another virus. (unboundmedicine.com)
  • Virus Degli Insetti 0 domande Viruses infecting insects, the largest family being BACULOVIRIDAE. (lookformedical.com)
  • Molecular cloning and comparative sequence analyses of bluetongue virus S1 segments by selective synthesis of specific full-length DNA copies of dsRNA genes. (umassmed.edu)
  • The double-shelled particle is the complete infectious form of the virus. (medscape.com)
  • The tick's saliva then contains the virus, and it becomes infectious for life. (wikipedia.org)
  • Reverse genetics programs used to generate recombinant infectious viruses are highly effective instruments for investigating viral gene. (bioconstructor.com)
  • The hispid cotton rat Sigmodon hispidus and cotton mouse Peromyscus gossypinus are important EVEV hosts, based on natural infection (virus isolation and high seropositivity), host competence (experimental infections), and frequency of contact with the vector. (bioone.org)
  • They include both DNA and RNA viruses as well viruses from humans and animals. (lookformedical.com)
  • Papovaviruses are one of the four important dsDNA viruses (e.g. papovaviruses, adenoviruses, herpes viruses and pox viruses) which produce tumour in many animals. (biologydiscussion.com)
  • The term papova is derived from the first two letters of the three prototypes, papilloma virus, polyoma virus and simian vacuolating virus-40 (SV40). (biologydiscussion.com)
  • When the virus replicates, the virion outer shell has to be removed in order for RNA polymerase to be activated to continue the replication of the virion's RNA. (wikipedia.org)
  • The virus replicates in those bone marrow cells, which disrupts the development and replication of leukocytes (white blood cells), eosinophils, and basophils. (wikipedia.org)
  • Virus Oncolitici 0 domande Tumor-selective, replication competent VIRUSES that have antineoplastic effects. (lookformedical.com)
  • The virus is partially uncoated by proteases in the endolysosome, where the capsid is partially digested to allow further cell entry. (wikidoc.org)
  • In 1959, Sabin proposed the name reovirus to reflect the fact that viruses of this group had been isolated from the respiratory and enteric tracts and were orphan (reo) viruses without known associated disease. (medscape.com)
  • Orungo virus, isolated in Africa, has been implicated in an acute illness with myalgias and headache. (medscape.com)
  • like disease transmitted by mosquitoes infected with Mayaro virus. (msdmanuals.com)
  • Viruses are also responsible for the common cold, childhood exanthems (such as chickenpox, measles, rubella), latent infections (such as herpes simplex), some cancers or lymphomas (such as Epstein-Barr virus), and diseases of all organ systems. (unboundmedicine.com)
  • A virus with reduced pathogenicity as a result of treatment or repeated passage through hosts. (unboundmedicine.com)
  • Virus Degli Archaea 0 domande Viruses whose hosts are in the domain ARCHAEA. (lookformedical.com)
  • Batteriofagi 0 domande Viruses whose hosts are bacterial cells. (lookformedical.com)
  • The other important viruses of this group are JC virus (associated with neurological degeneration), BX virus (which suppresses immune system of humans), K virus of mice, etc. (biologydiscussion.com)
  • Others, called SATELLITE VIRUSES, are able to replicate only when their genetic defect is complemented by a helper virus. (lookformedical.com)
  • Virus Helper 0 domande Viruses which enable defective viruses to replicate or to form a protein coat by complementing the missing gene function of the defective (satellite) virus. (lookformedical.com)