"WASHINGTON (Reuters) - The feared avian influenza virus is showing signs it can evade the drug considered the first line of defense against bird flu, researchers said on Friday.
They found so-called resistant strains in a Vietnamese girl who recovered from a bird flu infection after being treated with Tamiflu. They also found evidence she was directly infected by her brother and not by chickens, a rare case of human-to-human transmission of the virus."
It's that last sentence that worries me most. Human-to-human transmission is the last stage before pandemia. Let's see now, which horseman was pestilence...?