There are no comparative studies on avian flu. We're not saying drugs shouldn't be given. We just don't know. The jury is out.

Not enough is known about these drugs.

It seems like the drug industries are saying, 'The older drugs are available and they're cheap so we've done our thing.

He appeared to be on drugs. He was kind of weird, saying kind of sick things.

We don't want someone skipping out saying, 'I took all sorts of drugs and I'm negative,' or 'I can continue to do what I was doing.' It's really an opportunity to do some prevention work.

We are not saying we are confident these drugs will not cause liver toxicity,