May 11 Flu Update10,000 birds were culled in Bangladesh as the flu spread.
Vietnam has a "problematic" batch of avian vaccine, which means it can't be used...which puts provinces out hard earned cash.
World Migratory Bird Day is launched. Hint: you don't get the day off work.
Research shows that seven new species of wild birds have been identified as H5N1 carriers.
ProMed on this study. Notes that while it may not be much value in studying H5N1, they provide invaluable data on the life of flu viruses in wild birds.
CIDRAP has an update for its business audience on the antivirals and bird flu. This is a great summary of the state of play. Note this for the good---and the bad--of Tamiflu.
"The numbers are so small that it's hard to know whether Tamiflu is efficacious at mitigating disease, but it's all we have, so it's worth trying because it has very limited toxicity [poisonous effects]," says Stephanie Black, MD, assistant professor of medicine in the section of infectious diseases at Rush University Medical Center in Chicago. Studies in mice have demonstrated a protective and therapeutic benefit of Tamiflu against the 2004 Vietnam strain of H5N1. However, this efficacy does not guarantee the same result in humans or with a pandemic strain.
A 2007 study of the effectiveness of Tamiflu in improving the survival rate of ferrets exposed to the H5N1 virus found that giving the drug within 4 hours of exposure (ie, before illness) resulted in 100% survival. When the treatment was delayed 24 hours after exposure, a higher dose was needed to achieve the same result. (H5N1 follows a similar course in ferrets and humans.)