Results 41 to 50 of about 1,547,632 (301)

Phylogenetic analysis reveals a correlation between the expansion of very virulent infectious bursal disease virus and reassortment of its genome segment B [PDF]

, 2006
Infectious bursa] disease virus (IBDV) is a birnavirus causing immunosuppressive disease in chickens. Emergence of the very virulent form of IBDV (vvIBDV) in the late 1980s dramatically changed the epidemiology of the disease.
Lam, PY, Ng, PTW, Lam, TY, Lam, Tsan-Yuk, Rambaut, Andrew, Drummond, A, Zeng, F, Drummond, Alexei, Lee, Yiu-Fai, Yip, Chi-Wai, Leung, Frederick C. C., Rambaut, A, Zeng, Fanya, Hon, CC, Lam, Pui-Yi, Ng, Patrick T. W., Lee, YF, Hon, Chung-Chau, Yip, CW, Leung, FCC   +19 more
core   +1 more source

Vertical transmission selects for reduced virulence in a plant virus and for increased resistance in the host.

PLoS Pathogens, 2014
For the last three decades, evolutionary biologists have sought to understand which factors modulate the evolution of parasite virulence. Although theory has identified several of these modulators, their effect has seldom been analysed experimentally. We
Israel Pagán, Nuria Montes, Michael G Milgroom, Fernando García-Arenal   +3 more
doaj   +1 more source

Effect of strain and inoculation dose of classical swine fever virus on within-pen transmission. [PDF]

, 2009
To improve the understanding of the dynamics and options for control of classical swine fever (CSF), more quantitative knowledge is needed on virus transmission.
Loeffen, W.L.A., Backer, J.A., Stegeman, J.A., Weesendorp, E., Eefke Weesendorp, Arjan Stegeman, Backer, Jantien, Willie Loeffen, Stegeman, Arjan, Weesendorp, Eefke, Jantien Backer, Loeffen, Willie   +11 more
core   +1 more source

Comparison of Aerosol Stability of Different Variants of Ebola Virus and Marburg Virus and Virulence of Aerosolised Ebola Virus in an Immune-Deficient Mouse

Viruses, 2022
During outbreaks of virus diseases, many variants may appear, some of which may be of concern. Stability in an aerosol of several Ebola virus and Marburg virus variants was investigated.
Sophie J. Smither, Lin S. Eastaugh, Mark S. Lever   +2 more
doaj   +1 more source

Within-Host Dynamics of Multi-Species Infections:Facilitation, Competition and Virulence [PDF]

, 2012
Host individuals are often infected with more than one parasite species (parasites defined broadly, to include viruses and bacteria). Yet, research in infection biology is dominated by studies on single-parasite infections.
Eswarappa, Sandeepa M., Sylvie Estrela, Sam P Brown, Sylvie Estrela (156401), Estrela, Sylvie, Sam P. Brown (30600), Brown, Sam P., Sandeepa M Eswarappa, Sandeepa M. Eswarappa (156396), Brown Sam P., Estrela Sylvie, Eswarappa Sandeepa M.   +11 more
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Monoclonal antibodies to a virulent strain of transmissible gastroenteritis virus: comparison of reactivity with virulent and attenuated virus [PDF]

Archives of Virology, 1988
Twelve hybridomas secreting monoclonal antibodies (MAbs) against Miller virulent strain of transmissible gastroenteritis virus (TGEV) were generated and characterized. In a cell culture immunofluorescence (CCIF) assay, three MAbs directed against peplomer protein (E2) had perinuclear fluorescence and four unclassified MAbs showed cell membrane ...
Welch, Siao-Kun Wan, Saif, Linda J.
openaire   +2 more sources

Vaccinia virus protein A46R targets multiple Toll-like-interleukin-1 receptor adaptors and contributes to virulence [PDF]

, 2005
Viral immune evasion strategies target key aspects of the host antiviral response. Recently, it has been recognized that Toll-like receptors (TLRs) have a role in innate defense against viruses.
Nathan W. Bartlett, Geoffrey L. Smith, Haga, Ismar R, Geraldine Maloney, Bowie, Andrew G., Bartlett, Nathan W., Martina Schröder, Ismar R. Haga, Haga, Ismar R., Patrick C. Reading, Andrew G. Bowie, Fitzgerald, Katherine A, Smith, Geoffrey L, Schroeder, Martina, Reading, Patrick C, Smith, Geoffrey L., Katherine A. Fitzgerald, Bartlett, Nathan W, Julianne Stack, Maloney, Geraldine, Bowie, Andrew G, Schröder, Martina, Reading, Patrick C., Stack, Julianne, Fitzgerald, Katherine A., Reading, Patrick   +25 more
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Activation and modulation of antiviral and apoptotic genes in pigs infected with classical swine fever viruses of high, moderate or low virulence [PDF]

, 2009
The immune response to CSFV and the strategies of this virus to evade and suppress the pigs’ immune system are still poorly understood. Therefore, we investigated the transcriptional response in the tonsils, median retropharyngeal lymph node (MRLN), and ...
Hulst, M.M., Loeffen, W.L.A., Wit, A.A.C., de, A. A. C. de Wit, Mastebroek, B., S. V. M. Durand, W. L. A. Loeffen, Durand, S.V.M., L. Mastebroek, M. M. Hulst   +9 more
core   +1 more source

Increasing clinical virulence in two decades of the Italian HIV epidemic. [PDF]

PLoS Pathogens, 2009
The recent origin and great evolutionary potential of HIV imply that the virulence of the virus might still be changing, which could greatly affect the future of the pandemic.
Viktor Müller, Franco Maggiolo, Fredy Suter, Nicoletta Ladisa, Andrea De Luca, Andrea Antinori, Laura Sighinolfi, Eugenia Quiros-Roldan, Giampiero Carosi, Carlo Torti   +9 more
doaj   +1 more source

The evolution of parasitic and mutualistic plant-virus symbioses through transmission-virulence trade-offs. [PDF]

, 2017
Virus-plant interactions range from parasitism to mutualism. Viruses have been shown to increase fecundity of infected plants in comparison with uninfected plants under certain environmental conditions.
Sun, TA, Prendeville, HR, Hajimorad, MR, Hamelin, FM, Allen, LJS, Hilker, FM, Jeger, MJ, Hamelin, Frédéric, Marie, Hilker, Franck M., M. Reza Hajimorad, Hajimorad, M.Reza, Prendeville, Holly R, Linda J.S. Allen, Frank M. Hilker, Michael J. Jeger, Jeger, Michael. J., Frédéric M. Hamelin, Sun, Anthony T., Holly R. Prendeville, T. Anthony Sun, Allen, Linda J S   +20 more
core   +1 more source