How does the flu affect the lungs?
The flu can make you miserable for a number of reasons, including fever, body aches, and a dry cough. The virus that causes the flu can infect the epithelial cells in your lungs and start reproducing itself within your lung tissue. That leads to more inflammation as immune cells in the area try to fight back to get rid of the virus. The flu may also harm your lungs because it makes you more likely to get another infection, such as pneumonia.
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