Antigenic and genetic characteristics of influenza A(H5N1) and influenza A(H9N2) viruses for development of candidate vaccines viruses for pandemic preparedness – February 2011
The development of representative influenza A(H5N1) and A(H9N2) candidate viruses for influenza vaccines, which is coordinated by WHO, remains an essential component of the overall global strategy for pandemic preparedness. Comparisons of the candidate vaccine viruses with respect to antigenicity and their relationship to newly emerging viruses continue, and information on these comparisons will be updated periodically by WHO. An update of current and completed clinical vaccine trials can be found on the WHO website.
Full report download: http://www.who.int/entity/wer/2011/wer8611.pdf