Influenza A is further divided into subtypes. You may have heard of H1N1 or H3N2 – those are the two dominant types of ...

The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.

It's flu season right now, and the U.S. is in the midst of a wave that's straining hospitals. But not all influenza is the ...

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

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

Not all types of flu are the same. Some types of flu can make you very ill, while others cause milder symptoms. Read on to learn about the different types of flu. Flu, or influenza, is a ...

H5N1 bird flu is branching out. New data from the Centers for Disease Control and Prevention indicates that a second type of ...

Testing results from patients indicate that two strains of seasonal flu that are causing most illnesses — a Type A H1N1 and a ...

In today’s Health Alert, flu cases are on the rise, and Michigan is seeing very high flu activity, according to CDC data.