"To date, H5N1 has caused the most large-scale and widespread bird deaths in known history-an estimated 150 to 200 million birds have either died in the outbreaks or been killed as part of infection control actions in the last eight years. " 

i wonder what per cent died of bird flu and what per cent of 'infection control actions.'  also note that this is a live vaccine virus which poses its own dangers.

Vaccine gives “100 percent” bird flu protection in animal study

Jan. 28, 2006
Courtesy The University of Pittsburgh http://www.world-science.net/othernews/060128_flufrm.htm
and World Science staff