Doctors in the UK have been alerted over fears that Tamiflu could put some patients at increased risk of suffering a stroke, it was reported today.

HONG Kong yesterday detected a strain of swine flu that was resistant to Tamiflu, the main anti-viral flu drug, the health department reported on its website.

The bird flu virus that infected a Vietnamese girl was resistant to the main drug that’s being stockpiled in case of a pandemic, a sign that it’s important to keep a second drug on hand as well, a researcher said tonight.