The flu can also cause a general feeling of fatigue or malaise, Ray says, as well as gastrointestinal issues like diarrhea ...

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 typically ...

Flu A also has two subtypes that routinely circulate, H1N1 and H3N2. As for getting the flu twice in once season, Dr. Amesh Adalja, an infectious disease expert at Johns Hopkins Center for Health ...

or A(H3N2), according to a University of Minnesota report, which cited findings published in Clinical Infectious Diseases. Flu vaccination rates in New York this season continued to lag prior ...

Influenza A Viruses Adapt Shape in Response to Environmental Pressures - NIH Study Identifies Previously Unknown Adaptation ...

Cold and flu season has hit full force with cases on the rise. But one of the main questions remains: Can you get the flu ...

Testing results from patients indicate that two strains of seasonal flu that are causing most illnesses — a Type A H1N1 and a Type A H3N2. Health officials are closely watching a third strain ...

Flu season peaks between December and February, with influenza A and B causing seasonal epidemics. The flu shot reduces the ...

Influenza is surging in the U.S., with doctor visits for flu symptoms at a 15-year high. Why is this flu season so bad?

Most cases of flu have been caused by two known types of influenza A called H1N1 and H3N2, while a smaller percentage have been caused by the lineage of influenza B virus called Victoria.