[Boundless]

Bird flu might be less deadly than feared
http://www.newscientist.com/article.ns?id=dn8555

"But it is possible that many mild or symptom-free
H5N1 infections have gone undetected, meaning the
real fatality rate is lower."

Unfortunately, the study involved couldn't even be
used to support such a conclusion. And if it's true,
it's not clear whether or not there might be a
genetic predisposition factor.

[redgolum]

Which is as many of us suspected. There have been numerous cases of H5N1 that didn't get reported because the people didn't get that sick. What concerns me is that most of the cases that have been confirmed are those where someone is very sick.