Virulent strains. Medical search. Frequent questions

this unusual immunomodulatory response could explain the apparent high virulence of this atypical T. gondii strain. (frontiersin.org)
Although virulence is typically attributed to single pathogenic strains, here we investigated whether effectors secreted by a population of non-virulent strains could function as public goods to enable the emergence of collective virulence. (nature.com)
Each coisogenic strain was individually unfit, but the metaclone was collectively as virulent as the wild-type strain on Arabidopsis thaliana , suggesting that effectors can drive the emergence of cooperation-based virulence through their public action. (nature.com)
Strains of group A streptococci that are heavily encapsulated and rich in M protein (signifying virulence in streptococcal strains) seem to be most likely to result in infection. (medscape.com)
Different strains of the same micro-organism can vary in virulence. (aidsmap.com)
The authors then tested the virulence of the MUC strains in vivo by mixing 30 day MUCs from all six evolved lines and introducing them into mice. (the-scientist.com)
To detect and quantify antibiotic resistant and virulence genes present in methicillin sensitive S. aureus (MSSA) strains from wounds and burns patients. (scialert.net)
In order to establish the course of infection, virulence and pathogenicity, a Paraguayan Trypanosoma cruzi strain isolated from a 12 year old patient in 1989, Balb/c mice were inoculated, and the number of parasites were determined by direct parasitemia (micromethod). (bvsalud.org)
CONCLUSION: The virulence of Candida strains in G. mellonella is related to the quantity of proteinases and phospholipases production of each strain. (bvsalud.org)

At the same time, Haushofer developed an especially virulent strain of anti-semitic feeling. (wikipedia.org)
The 2017-18 flu strain was especially virulent, claiming 61,000 lives. (heritage.org)

Fig. 4: Effectors are sufficient for converting a beneficial strain into a pathogen. (nature.com)
In addition, there's heightened worry about a new, more virulent strain of the pathogen gaining a hold on the North Coast and causing more devastation. (pressdemocrat.com)
A response is mounted when surveillance data indicate a change in the incidence or distribution of an infectious disease, or when a new or variant strain of a pathogen has become a health threat. (aafp.org)
Our first clue that oxalate was important came from an observation that hypovirulent fungal strains (those that can't attack the tree as well) produced far less oxalate than virulent (normal) strains of the pathogen (Havir & Anagnostakis 1983). (esf.edu)

Quantification of the S. aureus strains was performed using quantitative Polymerase Chain Reaction (qPCR) assay. (scialert.net)
The agarose gel electrophoresis of the PCR products of mec A and sea genes showed amplicon size of 657 bp for mec A and 526 bp for sea genes after amplification of the antibiotic resistant S. aureus strains. (scialert.net)

The authors sequenced over 1,500 TB bacteria from patients and showed the strain known as Beijing lineage, was responsible for 60% per cent of TB cases in the city, and 60% of those diagnosed in younger people. (familywnews.com)
First author on the paper, Associate Professor Kathryn Holt from the University of Melbourne's Bio21 Molecular Science and Biotechnology Institute, said the study shows that the Beijing lineage of TB bacteria spreads more easily from person-to-person than other strains of the bacteria. (familywnews.com)
By investigating the genome sequence of an international collection of strains of Listeria monocytogenes bacteria, two Institut Pasteur scientists, Sylvain. (pasteur.fr)

A highly pathogenic H5N1 strain of avian influenza, one which can be transmitted to other animals and birds, has been detected in Estonia, the Agricultural and Food Board (VTA) has announced. (err.ee)
The influenza A subtypes are further classified into strains, and the names of the virus strains include the place where the strain was first found and the year of discovery. (bcm.edu)
The overall scenario is a virulent strain of influenza. (albany.edu)
A new and virulent strain of influenza in Hong Kong. (aafp.org)

However, owing to paucity of information on the methicillin sensitive strains and the detection of both resistant and virulent genes from other studies have not been linked with wound and burn samples, thus the need for this study. (scialert.net)
The strain eliminated by vaccination in the 20th century - which killed 1 in 3 people - had lost around 30 genes. (newscientist.com)
The strains that Mühlemann sequenced had lost only half of these 30 genes. (newscientist.com)
Strains with the full set of 200 genes typically cause only mild disease, says Antonio Alcamí at the Autonomous University of Madrid, Spain, who was not part of the team. (newscientist.com)

We disaggregated the 36 type III effectors of the phytopathogenic bacterium Pseudomonas syringae strain PtoDC3000 into a 'metaclone' of 36 coisogenic strains, each carrying a single effector in an effectorless background. (nature.com)
Commensal Pseudomonas strains facilitate protective response against pathogens in the host plant. (nature.com)

Almost 44 (22%) S. aureus were isolated and characterized with 36 (82%) strains producing β-lactamase and were resistant to oxacillin (MRSA) while, 8 (18%) strains do not produce β-lactamase and were sensitive to oxacillin (MSSA). (scialert.net)
Out of the 512 MSSA strains, 449 (87.7%) were resistant to penicillin while, 155 (89.6%) of 173 MRSA were resistant to penicillin as reported by Naik and Teclu 2 . (scialert.net)
Health facilities in the state should institute effective antimicrobial stewardship, intensify surveillance and screening of Staphylococcus aureus for MRSA strains to guard against dissemination of multidrug resistant strains in both hospital and community settings because of the clinical implications. (who.int)
Considered as more virulent and transmissible than traditional MRSA strains, 1 CA-MRSA may lead to outbreaks associated with severe morbidities and hospitalizations in otherwise healthy young adults or teenagers. (who.int)

The spring spread of the virus has not slowed down with the end of the spring nesting season, and outbreaks are also present in neighboring countries, particularly the highly pathogenic H5N8 and H5N1 strains, which have been detected in foxes in Holland and seals in the U.K. and Sweden. (err.ee)
The most pathogenic Candida species in G. mellonella were C. albicans, C. dubliniensis and C. lusitaniae, whereas C. glabrata was the least virulent species. (bvsalud.org)

With the outbreak of the Enterovirus 71 strain in Malaysia and its proportion of cases increasing in Singapore, Talking Point finds out more about the nasty virus and how to protect against it. (maroon-connection.com)
Toddler Yusuf Danial had become the first Malaysian victim of the Enterovirus 71 (EV-71) HFMD strain - a more virulent strain that is also on the increase in Singapore. (maroon-connection.com)

Walensky said that the newer strain has been shown to be more transmissible among younger people and that new outbreaks in the U.S. have been linked to youth sports and day care centers. (kuer.org)
Studies have suggested that the variant is about 50% more transmissible than the strain of the coronavirus first identified in China in December 2019. (kuer.org)

The variant, known as B.1.1.7, spread quickly across the United Kingdom and Ireland beginning last fall, with the more infectious version of the coronavirus thwarting restrictions and lockdowns that had earlier helped keep the original strain in check. (kuer.org)
As early as four days into the month-long experiments, two new types of colonies were visible: one that formed smaller colonies than the original strain-termed SCV, for small colony variants-and one that formed large mucoid colonies-dubbed MUC, or mucoid translucid colonies. (the-scientist.com)

Here we show that vaccination with AMA1-RON2L complex in Freund's adjuvant protects Aotus monkeys against a virulent Plasmodium falciparum infection. (nature.com)
Indeed, upon quantifying E. coli mutants within and outside macrophages in an infection experiment, the authors found significantly fewer MUCs inside macrophages as compared with the same experiment performed on the ancestral strain. (the-scientist.com)
However, NOD1, NOD2, and Rip2 knockout mice were no more susceptible to infection with virulent B. abortus than wild-type mice. (hindawi.com)

The wild-type strain C57BL/6 mice were purchased from the Federal University of Minas Gerais (UFMG, Belo Horizonte, Brazil). (hindawi.com)

Major outbreaks involving humans have been associated with Venezuelan equine encephalitis subtype I, varieties AB and C. The IA and IB strains are considered genetically indistinguishable and are thus classified as IAB. (medscape.com)
The sequence of the SzP protein gene, or szP, has been shown to vary greatly between different strains of S. zooepidemicus and the variable regions of szP can be used to genetically differentiate strains within the subspecies. (cdc.gov)

Area in which dead Eurasian magpies were collected during July and August 2017 in a study of bird-virulent West Nile virus, Greece. (cdc.gov)

Each time, new strains of viruses emerge and strike back, and they become more contagious and virulent. (chinadaily.com.cn)
The worker has the highly contagious UK strain of the virus and could have been carrying it around Perth for five days before he tested positive at the weekend and went into quarantine. (afr.com)

A more easily spread coronavirus variant first identified in England last year has now become the dominant strain in the U.S., the head of the Centers for Disease Control and Prevention said Wednesday. (kuer.org)
Hanage said it was "inevitable" that the B.1.1.7 variant would become the dominant strain in the U.S. but expressed some optimism about the timing. (kuer.org)
The second factor, he said, "is that the younger age groups now being infected with B.1.1.7 are more likely to have severe disease, because the variant is more virulent. (kuer.org)

CDC Says More Virulent British Strain Of Coronavirus Now Dominant In U.S. (kuer.org)
The CDC warned in January that B.1.1.7 would likely become the dominant strain of SARS-CoV-2 - the coronavirus that causes the disease COVID-19 - in the U.S. by the end of March. (kuer.org)

As expected, mice exposed to MUCs showed significantly reduced survival compared with those exposed to ancestral strains or the control E.coli evolved without macrophages. (the-scientist.com)
The results confirmed that 25 samples con- tained B. anthracis, of which 9 were virulent for mice and guinea pigs. (who.int)

The purpose of this study was to characterize the clinical presentation of the disease caused by S. zooepidemicus , microbiologically characterize the isolated strains, and identify clonality of human isolates for comparison to equine isolates from contact horse stables or other horse farms of the surrounding area. (cdc.gov)
Two primer pairs TC22 and TC4 were synthesized and applied to other Paraguayan T. cruzi isolates and two Leishmania mexicana amazoniensis str. (bvsalud.org)

The incidence of invasive Hib diseases has greatly decreased because of widespread use of the Hib conjugate vaccine, whereas NTHi strains have become the most common cause of invasive disease in all age groups in countries with routine Hib vaccination. (medscape.com)

Further, even with the more virulent omicron strain and even with the risk of breakthrough infections, scientific studies have shown vaccination reduces the odds of hospitalization - reducing the burden on the city's hospitals and on city departments with sick employees - and decreases the amount of time somebody is infectious, she wrote. (universalhub.com)

LSTM's Dr Maxine Caws is co-lead investigator on an advanced genetics study published in Nature Genetics(link is external), which has shown that a virulent strain of tuberculosis (TB) has adapted to transmit among young adults in Ho Chi Minh City, Vietnam. (familywnews.com)
The largest cohort study ever to look at CD4 count and viral loads in HIV-positive people around the time of diagnosis has found evidence that HIV, at least in Europe, has become more virulent over time. (aidsmap.com)

One explanation for this diversity of strains is that the smallpox virus jumped from animals to people more than once. (newscientist.com)
New virulent strains are the best explanation. (medscape.com)

Because those vaccinated tend to shed the virus in their stool, it can mutate into a virulent form, causing paralytic polio in others, even leading to polio epidemics. (greenmedinfo.com)
He acknowledged, however, the emergence of the more virulent EV-71 at a bigger number compared to the usual pattern we've seen for the past few years' , when the Coxsackie virus was more widespread. (maroon-connection.com)
While the Ministry of Health has reported a 'slight increase' in the proportion of EV-71 cases here, the Coxsackie virus type A remains the predominant strain, like in past years. (maroon-connection.com)
Scientists from the Institut Pasteur and the CNRS have identified two new strains of the HTLV-4 virus in two hunters who were bitten by gorillas in Gabon. (pasteur.fr)
In addition, the establishment and recent spread of lineage II WNV virus strains into Western Europe and the presence of neurovirulent and neuroinvasive strains among them is a cause of major concern. (mdpi.com)
While these epizootic strains are virulent in equines and humans, the enzootic Venezuelan equine encephalitis virus serotypes ID, IE, and IIIA can cause illness in humans but not in equines. (medscape.com)
We feel we can't say with certainty that that virus was less virulent in the past," says Mühlemann. (newscientist.com)

The North American lineages of WNV were characterized by the presence of neuroinvasive and neurovirulent strains causing disease and death in humans, birds and horses. (mdpi.com)

In the non-albicans species, proteinase and phospholipase activity were observed in 25 and 43% of the studied strains, respectively. (bvsalud.org)

Resistance to killing by serum and binding of C4BP is observed mostly in virulent strains that cause disseminated infections. (lu.se)

Epizootic viral strains IAB and IC are virulent in humans and equines. (medscape.com)

It appears to be highly virulent. (wikipedia.org)

A new strain of multidrug-resistant tuberculosis, now endemic in New York City and New York state. (aafp.org)

HFMD is usually mild, with few complications, but the EV-71 strain can be fatal because of its severe complications, which include neurological, respiratory and cardiovascular problems. (maroon-connection.com)

Fig. 2: Collective action of the PtoDC3000 metaclone supports growth of laboratory and natural freeloader strains. (nature.com)
Brucella abortus virulent strain S2308 was obtained from our laboratory collection [ 22 ]. (hindawi.com)

She said that communities and states with high levels of transmission need to curtail or suspend sports activities for younger participants to contain the spread of the new strain. (kuer.org)
The fact that the B.1.1.7 strain is more easily spread gives it the potential to kill more people. (kuer.org)
Wininger said one of the highlights of this year's surveys is the unveiling of a new test for the European strain in time to possibly thwart its spread. (pressdemocrat.com)
In an affidavit, Dr. Bisola Ojikutu, executive director of the Boston Public Health Commission, pointed to the direct interaction the public has with police officers and firefighters and said the far more virulent omicron strain had made the weekly testing the city had allowed for employees impractical as a method to stop the virus's spread. (universalhub.com)

METHODS: Twenty-four clinical strains of Candida spp. (bvsalud.org)

This is owing to its involvement in the evolution of MDR strains and difficulty in therapeutic management of infected patients. (who.int)
Pour identifier les espèces de Leishmania, des techniques moléculaires ont été appliquées sur des échantillons prélevés chez 64 patients atteints de leishmaniose cutanée orientés vers l'hôpital régional d'Herat en 2013. (who.int)
Clustered cases may occur among those living in crowded quarters with relatively poor hygiene or among contacts of patients infected with virulent strains. (msdmanuals.com)

Amastigotes were obtained from the high- and low-virulent clones of the Talahuen strain and fron the G-1 strain. (bvsalud.org)

They think this could be more virulent than the earlier B5 subtype. (news-medical.net)
And so, I would caution an equivalence with earlier strains and the responses there. (afr.com)

The latter strain was detected in May, in two sea eagle chicks found in Matsalu, and in birds, found dead in Pärnu County, Lääne and Ida-Viru counties last week," VTA spokesperson Hele-Mai Sammel said. (err.ee)

140 southern sea otters represent Type II or Type X strains, or variants of these genotypes. (frontiersin.org)
The most virulent strain is H influenzae type b (Hib). (medscape.com)

The MUCs, on the other hand, steadily increased in number and eventually took over the entire population in five of the six strains tested. (the-scientist.com)

The virulent strains of etative cells and activate the spores. (who.int)

The authors found that 30-day-old SCVs outcompeted the ancestral strain when introduced into macrophages and tested after two hours. (the-scientist.com)

Of these, the EV-71 strain has claimed the lives of two: Danial, in June, and a 27-month-old child in Sarawak, in July. (maroon-connection.com)

It appears to be a virulent new strain of political correctness. (scoop.co.nz)

The researchers followed the evolution of six E.coli strains, with or without mouse macrophages at a ratio of 1:1. (the-scientist.com)

Characterizing Campylobacter plasmids within the food animal production niche is important to understanding the epidemiology of potential emerging strains. (bvsalud.org)

Why it became more virulent does not make sense," says Alcamí. (newscientist.com)

Anatomy14

Organisms67

Diseases33

Chemicals and Drugs44

Analytical, Diagnostic and Therapeutic Techniques and Equipment33

Phenomena and Processes61

Disciplines and Occupations6

Anthropology, Education, Sociology and Social Phenomena1

Technology, Industry, Agriculture1

Information Science4

Health Care12

Virulence9

Especially virulent2

Pathogen4

Aureus strains2

Bacteria3

Influenza4

Genes4

Pseudomonas2

MRSA4

Pathogenic2

Enterovirus2

Transmissible2

Original strain2

Infection3

Wild-type strain1

Genetically2

20171

Contagious2

Variant3

Coronavirus2

Mice2

Isolates2

Vaccine1

Vaccination1

Study2

Explanation2

Virus7

Disease1

Species1

Resistance1

Humans1

Highly1

Endemic1

Fatal1

Laboratory2

Spread4

Methods1

Patients3

High1

Earlier2

Birds1

Type2

Population1

Cells1

Found1

Lives1

Appears1

Evolution1

Important1

Make1