German authorities warn of swine flu mutation risk | Health | Reuters

This could be really bad:

German authorities warn of swine flu mutation risk | Health | Reuters:

"Germany's federal agency for infectious diseases said on Tuesday there were signs the H1N1 swine flu virus had started to mutate and warned it could spread in the coming months in a more aggressive form.

Experts were concerned about how the flu was developing in Australia and South America, said Joerg Hacker, head of the Robert Koch Institute for infectious diseases."