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 ...

Flu A and flu B are two different strains of influenza, explains Thomas Russo, M.D., professor and chief of infectious ...

While we often refer to it as "the flu," the influenza virus has several strains, with flu A and flu B considered the most ...

The winter flu season features two types of influenza. Here's what you need to know about them and how they differ.

There are more than 100 different Influenza A subtype combinations currently known. Influenza B viruses, however, typically change more slowly than Influenza A and only infect humans. Experts say ...

The first human case of bird flu in Ohio was reported in a farm worker from Mercer County. There have been 68 human cases of ...

The findings come at a time when outbreaks of bird flu -- a different subtype of the same influenza virus -- in dairy cattle have ... Study Shows Drop in Use of Antiviral Medications in Young ...

Influenza A is further divided into subtypes. You may have heard of H1N1 or H3N2 – those are the two dominant types of influenza A circulating right now, according to the CDC. “Influenza A ...