Hi, Previously, I thought like everyone else that viruses were alive inside and dead outside the hosts body. However recently I read a book which discussed diseases. According to it, (the scan of the page is attached) there was an outbreak of a virus caused disease (flu) in 1918 in Alaska. In 1950, the virus was rediscovered and it did'nt infect suitable hosts because it was dead. Does this mean that it is possible to kill a virus for once and for all. If so, what methods are used for killing the virus and as a result of such methods what goes wrong in the virus which makes it rest in peace. Regards.