H5N1 flu virus splits into genetic subtypes

Researchers have determined that the H5N1 virus has evolved into two distinct genetic subtypes, making it harder to find a vaccine and increasing the odds of a pandemic. Researchers at the CDC have determined that the virus strain spreading in Indonesia is genetically distinct from the virus that has spread elsewhere in the world. But they add that neither subtype can pass easily among humans. People who have contracted the disease from birds have experienced a 50 percent mortality rate. The potential of a human pandemic has triggered intense research activity to find a vaccine to protect people.

- here's the article from the BBC

PLUS: The FDA has banned the use of anti-viral drugs in poultry in order to maintain their effectiveness for people. Report

ALSO: The World Health Organization is under growing pressure to share flu virus data with researchers. Report

AND: Pakistan has now confirmed the presence of the virus in poultry. Report