According to Dr. Tom Frieden, Director of the CDC, there is widespread H1N1 activity in 46 states. H1N1 influenza continues to be a disease primarily involving children and young adults. "Many ...

January 5, 2011 — Extreme obesity is a risk factor for death from pandemic influenza A (H1N1), according to research published online today and in the February 1 issue of Clinical Infectious Diseases.

A young girl in Pima County has died of 2009 H1N1 influenza - the 10th confirmed death here from the novel flu strain this year, health officials said Friday. The girl was younger than a preteen and ...

A new headline-grabbing report from the White House claims that swine flu could plausibly infect up to 50% of Americans, causing flu symptoms among some 60 to 120 million of them, and leading to as ...

Both H1N1 and COVID-19 spread across the U.S. faster and more unpredictably than early detection systems could keep up.