The Globe and Mail story:
"Ominous changes in the behaviour and the makeup of the H5N1 avian influenza virus in northern Vietnam has the flu world worried the virus may be getting better at infecting humans.
"In recent months the virus has sparked increasing numbers of small clusters of cases, suggesting more frequent occurrences of limited person-to-person spread. As well, it appears not to be killing as many of its human hosts ? a biological change that cannot be assumed to be an entirely positive sign."
Monday, May 02, 2005
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