But in the case of an H1N1 infection, which can lead to serious upper respiratory problems, those factors don't seem to matter as much as with seasonal influenza, which typically hits the very young, very old and infirm hardest, said Dr. Lori Patterson, director of pediatric infectious diseases at the hospital.
"The same rules don't apply," Patterson said. "Around half of the kids we've had who have needed to go on ventilators have been perfectly healthy kids. ... This seems to be happening somewhat indiscriminately."
Read the full report at the Knoxville News Sentinel's web site.