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82. Picture of Influenza Virus

Influenza Virus Illustration
Image Source: MedicineNet, Inc.
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Influenza, or the flu, is a group of viruses that affect the nasal passages and lungs. There are three types of influenza, designated A, B, and C. Most cases of the flu resolve within 1 to 2 weeks. Sometimes, people may develop very serious and even life-threatening complications, requiring hospitalization. Pneumonia is one potential complication of the flu. The risk of illness, complications, and death from the flu can be reduced by annual flu vaccination.
Image Source: MedicineNet, Inc.

Text Reference: CDC.gov: “Influenza (Flu).”

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