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Virulence of bluetongue virus for British sheep
Research in Veterinary Science, 1987A South African isolate of bluetongue virus type 3 was inoculated intradermally into three different breeds of British sheep under conditions designed to test its virulence in animals under stress. All animals inoculated developed a pyrexia and viraemia followed by clinical evidence of bluetongue disease.
M J, Jeggo +4 more
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Evaluation of Various Virulence Tests with Low Virulence Vaccinia Virus in Mice
Biologicals, 1994Two vaccinia virus (VV) clones, denoted P20 and P21 were derived from the parental VV strain Praha. The residual virulence of these two viruses in mice was compared. Intracerebral inoculation of 21-day-old mice did not reveal any marked difference between the two viruses.
V, Ludvíková +3 more
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Comparative features of low‐virulence and high‐virulence marek's disease virus Infections
Avian Pathology, 1974Virus clones from 2 Marek's disease virus (MDV) isolates from flocks with low natural incidences of Marek's disease (MD) were, at most, only mildly pathogenic compared to clones from the highly virulent JM isolate. Clones from a single donor bird appeared to vary in pathogenicity.
M W, Smith, B W, Calnek
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Characterization of Virulence Variants of African Horsesickness Virus
Virology, 1993There are three clinicopathologic syndromes associated with African horsesickness (AHS) virus infection in horses. These different forms of AHS (pulmonary, cardiac, and fever forms) vary in the organs affected, the severity of lesions, time of onset of clinical signs and mortality rates.
W W, Laegreid +3 more
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Cowpox virus virulence determinants
2019Die Zahl der Kuhpocken Virus Infektionen in Deutschland steigt beständig. Dabei ist auffallend, dass die Infektionen bei als Haustier gehaltenen Ratten mit den neu auftretenden Kuhpocken Stämmen oft einen letalen Verlauf nehmen. Das Kuhpocken Isolat von einer Haustierratte, RatPox09, hat in Süddeutschland auch zu Infektionen beim Menschen geführt ...
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[Virulence of human immunodeficiency virus].
La Revue du praticien, 1995Virulence is relative capacity of a virus, compared to other closely related viruses, to produce disease in a host. Viral strains considered as virulent have been described in HIV-1 infected patients. They are characterized in vitro by enhanced cellular host range, rapid kinetic of replication and increased capacity of syncytium induction. Some genetic
F, Brun-Vézinet +3 more
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REVERSION TO VIRULENCE IN AN INFLUENZA VIRUS MUTANT
Australian Journal of Experimental Biology and Medical Science, 1957F M, BURNET, P E, LIND
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