Data from the Centers for Disease Control and Prevention shows seasonal flu activity continues to increase across the country ...

(NEXSTAR) – The flu is spreading far and wide ... about 97% have turned up positive for influenza A. Influenza A is further divided into subtypes. You may have heard of H1N1 or H3N2 – those ...

and is "the only influenza viruses known to cause flu pandemics." There are more than 100 different Influenza A subtype combinations currently known. Influenza B viruses, however, typically change ...

The flu is spreading far and wide across the U.S. – and influenza A is largely to blame. Of all the flu tests reported to the ...