The three main types of flu in humans include influenza A, B, and C. There's also influenza D, but this primarily affects cattle and is not known to infect people.

Three types of flu viruses affect humans: types A, B, and C. Type A and B cause the annual influenza epidemics that have up to 20% of the population sniffling, aching, coughing, and running high ...

Influenza is caused by three types of RNA viruses called influenza types A, B and C (considered different genera), which all belong to the family Orthomyxoviridae.The disease, colloquially called ...

This year's vaccine protects against three different types of flu viruses to include the 2009 H1N1 virus that caused so much illness in the past.

Flu season is here, and there are 3 different types of flu viruses to watch out for. Here's what you need to know.

Type B is one of three types of influenza viruses that infect humans—A, B, and the very mild C. (There's a fourth type, D, but so far it mainly seems to infect cattle.) ...

(NEXSTAR) – 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 Centers for Disease Control and Prevention since the ...

This pie chart shows the number of flu cases reported nationwide for a three-week period ending on Jan. 25, 2025. The data shows the most positive number of flu cases were type A.

The H5N1 avian flu is circulating in cows and other mammals. Whether it will make a permanent leap to humans is another ...