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Acta Virologica Vol.49, p.147-157, 2005 |
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Title: THE FACTORS OF VIRULENCE OF INFLUENZA A VIRUS | ||
Author: T. FISLOVÁ, F. KOSTOLANSKÝ | ||
Abstract: This review deals with factors that influence the virulence of influenza A virus. A high genetic
and antigenic variability is demonstrated in a broad spectrum of influenza A viruses ranging from avirulent to
lethal ones. Influenza A viruses have caused several epidemics and pandemics in the past and present that have
cost millions of lives worldwide. Therefore these viruses still belong to the most important ones with strong
impact on whole human population. Here, we discuss the latest findings concerning the role of individual viral
proteins, interaction of the virus with the host immune system, and interspecies transmission and evolution of
the virus. It is important to elucidate the genetic background of virulence of influenza A viruses, mechanisms
involved in crossing the interspecies barrier, and mechanisms of destruction of the host cell by these viruses,
and to identify the factors influencing the interaction between these viruses and the host immune defense
system. This knowledge should help to estimate the threat of influenza A viruses with human pandemic potential
to human population. |
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Keywords: influenza; influenza A virus; interspecies transmission; pandemic potential; pathogenesis; virulence | ||
Year: 2005, Volume: 49, Issue: | Page From: 147, Page To: 157 | |
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