Saturday, May 28, 2005

Chinese bird flu vaccine redux?

Back in February we posted about the supposed Chinese vaccine breakthrough. We are again getting press releases and news conferences about Chinese bird flu vaccine, touted this time as "100% effective." As other commentators have noted (for example, John Woodall of ProMed here), no vaccine is 100% effective in those who receive it, but this claim may refer to the ability to raise antibodies and hence some protection in all of the bird species tested. Too little information has been released about these vaccines to make an informed judgment as to the significance of the claims of the Chinese government.

Meanwhile, take a glance at the earlier post for an interesting "back story" to the February announcement. The relationship of the currently announced vaccines and those from 3 months ago is not clear at this point. It is likely they are the same or very similar.