What Is Flu B?
Reviewed: Dr. Gromatzky
The flu, also known as influenza, is an infection that is caused by a flu virus. There are numerous types of viruses that cause the flu, and the viruses are not created equal. Some flu types cause mild symptoms, while others can cause someone to become very sick.
The four types of flu viruses are A, B, C and D. Type B is common and one of the types that causes the annual flu. Flu B causes a variety of symptoms, and there are numerous treatments to ease symptoms in people who are infected.
