Sep 18, 2024 · There are four types of influenza viruses: A, B, C, and D. Influenza A and B viruses cause seasonal epidemics of disease in people (known as flu season) almost every winter in the United States.

Feb 23, 2023 · Type A influenza is a common infection that can cause widespread flu outbreaks. It can cause fever, body aches, chills, fatigue, and other symptoms. Influenza — also known as the flu — is a...

Jan 23, 2025 · 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...

Oct 11, 2022 · The flu is an illness you get from the influenza virus. It causes symptoms like head and body aches, sore throat, fever and respiratory symptoms, which can be severe. Flu is most common in winter months, when many people can get sick at once (an epidemic).

Jan 22, 2025 · For example, influenza A usually accounts for more flu cases and causes more severe illness than type B flu. For example, flu A accounted for 96% of flu cases reported in late 2024.

Jan 7, 2025 · Flu, also called influenza, is an infection of the nose, throat and lungs, which are part of the respiratory system. The flu is caused by a virus. Influenza viruses are different from the "stomach flu" viruses that cause diarrhea and vomiting. Most people with the flu …

Jul 23, 2024 · There are four different types of influenza viruses: Influenza A, B, C, and D. Influenza A and B cause epidemic seasonal infections nearly every year, but A is more common. Influenza, known as “...