Add Yahoo as a preferred source to see more of our stories on Google. Vaccine research quickly picked up to try to prevent a possible flu pandemic in 1976. AP Photo Nineteen-year-old U.S. Army Pvt.

So sayeth the World Health Organization (WHO)—and they should know, since they were the ones who declared a full, phase six-level pandemic a little more than a year ago. Now it’s done—this morning WHO ...

A new study has identified an influenza virus circulating in pigs that shows multiple traits associated with pandemic potential. Known as H1N2, the virus belongs to a lineage of flu viruses that ...

Chinese researchers have discovered a new type of swine flu that can infect humans and has the potential to cause a future pandemic, according to a study released on Monday, though scientists have ...

A top CDC official says concern over the outbreaks has grown since Thursday. April 24, 2009— -- A top federal health official said the government's concern over the swine flu outbreaks in the ...

World Health Organization (WHO) officials declared a pandemic of H1N1 influenza on Thursday, two months after the first cases of the new flu virus were reported in Mexico. It is the first flu pandemic ...

Donald S. Burke does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...