Emerging bird flu strain still far from affecting humans

Scientists have found that avian influenza virus H7N9, which killed several dozen people in China earlier this year, has not yet acquired the changes needed to infect humans easily.

Bird flu strain infects human for 1st time

A bird flu strain that scientists believed could not infect humans has shown up in a Taiwanese woman.

New bird flu strain `adapting to mammals, humans`: Study

A genetic analysis of the avian flu virus responsible for at least nine human deaths in China portrays a virus evolving to adapt to human cells, raising concern about its potential to spark a new global flu pandemic, a study has said.