Question 1

Symptoms — Influenza (flu)?

Accepted Answer

The viruses that cause flu spread at high levels during certain times of the year in the Northern and Southern hemispheres. These are called flu seasons. In North America, flu season usually runs between October and May. Symptoms of the flu such as a sore throat and a runny or stuffy nose are common. You may also get t

Question 2

Causes — Influenza (flu)?

Accepted Answer

Influenza is caused by viruses. These viruses travel through the air in droplets when someone with the infection coughs, sneezes or talks. You can inhale the droplets directly. Or you can pick up the virus from touching an object, such as a computer keyboard, and then touching your eyes, nose or mouth. It's possible to

Question 3

Risk factors — Influenza (flu)?

Accepted Answer

There are a range of factors that may raise your risk of catching a flu virus or having complications from a flu infection.

Question 4

Diagnosis & treatment — Influenza (flu)?

Accepted Answer

Dec. 19, 2025

Influenza (flu)

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