https://www.cdc.gov/flu/symptoms/symptoms.htm

People who are sick with flu often feel some or all of these symptoms: ... Flu virus infection of the respiratory tract can trigger an extreme inflammatory response ...

https://www.mayoclinic.org/diseases-conditions/flu/symptoms-causes/syc-20351719

Apr 11, 2019 ... Learn more about the symptoms, causes and prevention of this potentially ... Influenza is a viral infection that attacks your respiratory system ...

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

Aug 24, 2017 ... Not all flu is created equal: Some types can make you very ill, while other types of flu cause milder symptoms. Read on to learn about the ...

https://vicks.com/en-us/treatments/how-to-treat-the-flu/what-are-type-a-and-type-b-flu

Learn the differences between influenza A and influenza B. Find out more about their signs, symptoms, and treatments.

https://www.stanfordchildrens.org/en/topic/default?id=influenza-flu-in-children-90-P02514

It does not cause epidemics and does not have the severe public health impact that influenza types A and B do. Influenza viruses continually change (mutate), ...

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

Mar 26, 2018 ... Influenza B symptoms are very similar to those of the common cold. But influenza B is highly contagious and can lead to more serious ...

https://www.healthline.com/health-news/heres-whats-going-on-2019-flu-season

Feb 22, 2019 ... Influenza activity picked up again last week, reaching a new peak this season. Still, this ... to attack four strains: H1N1, H3N2, Influenza A, and Influenza B. ... Typical flu symptoms include cough, fever, fatigue, and body aches.

https://www.hopkinsmedicine.org/health/conditions-and-diseases/influenza/influenza-flu-in-children

Influenza is a highly contagious infection of the upper respiratory system. ... It does not have the severe public health impact that influenza types A and B do.

https://www.verywellhealth.com/what-is-influenza-a-770484

What is influenza and how can it affect you? Get the facts about influenza A and B , including what to expect if you get sick. ... Symptoms. Influenza A. Influenza B.

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

Feb 11, 2019 ... Afraid you might have influenza B? Here are the signs and symptoms of influenza B that you can look out for.