Published in Vaccine Weekly, November 1st, 1999
Two years ago a new subtype of influenza virus, H5N1, was responsible for series of fatal cases of influenza in Hong Kong. While the H5 subtypes of influenza were known to common in birds, this marked the first ever cases of H5 infection in humans. Vaccine development against this virus has been difficult because it kills...
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Source: Vaccine Weekly (1999-11-01)
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