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www.webmd.com/cold-and-flu/advanced-reading-types-of-flu...

There are three types of flu viruses: 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 fevers ...

vicks.com/.../what-are-type-a-and-type-b-flu

Influenza B almost exclusively infects humans and is less common than influenza A. Flu type B also mutates about two to three times more slowly than influenza A. Because humans are the natural host of influenza B, pandemics generally do not occur with influenza B viruses. 22

www.cdc.gov/flu/consumer/symptoms.htm

Flu Symptoms. Influenza (also known as flu) is a contagious respiratory illness caused by flu viruses. It can cause mild to severe illness, and at times can lead to death. Flu is different from a cold. Flu usually comes on suddenly. People who are sick with flu often feel some or all of these symptoms: Fever* or feeling feverish/chills; Cough ...

www.livestrong.com/article/24668-influenza-b-signs-symptoms

The signs and symptoms of influenza A and B are very similar, but influenza B symptoms are often less severe. As well, some symptoms tend to be more common with influenza B than with influenza A. But despite these slight differences, influenza A and B are treated and prevented in the same ways.

www.allure.com/story/deadly-flu-season-symptoms

Getty Images. A major difference between the 2017 to 2018 flu season and the 2018 to 2019 flu season is that this year a vaccine nasal spray is available in addition to the flu shot.

www.healthline.com/health/influenza-b-symptoms

Type B influenza can cause you to experience symptoms more severe than a common cold. In some cases, this infection resolves without the need for medical attention.

www.healthline.com/health/influenza-a-symptoms

Type A influenza is a contagious viral infection that can have life-threatening complications if left untreated. Influenza A symptoms can be confused with signs of other conditions but are usually ...

healthfully.com/influenza-type-symptoms-4826515.html

Symptoms of Type A Influenza. Type A and Type B influenza cause the same set of symptoms, and protection against both types is included in the flu vaccine that scientists develop each year. According to the Centers for Disease Control and Prevention, there's also a third type of influenza virus, Type C, which causes only mild respiratory symptoms and is not included in the annual vaccine.

www.livestrong.com/article/90814-differences-influenza-b

Influenza type B viruses are not categorized by subtype but rather by strains and lineages, such as Yamagata and Victoria. The difference in categorization of influenza types A and B is due to differences in how quickly they undergo spontaneous genetic changes.

www.cdc.gov/flu/symptoms/index.html

Influenza (also known as “flu”) is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. This page provides resources about flu symptoms, complications, and diagnosis. Flu and the common cold are both respiratory ...