Influenza (flu) - Symptoms and causes - Mayo Clinic
Dec 19, 2025 · Flu, also called influenza, is an infection of the nose, throat and lungs, which are part of the respiratory system. The flu is caused by a virus. Influenza viruses are different from …
Influenza (Flu) | Influenza (Flu) | CDC
Influenza (flu) is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and lungs. Learn about flu, including symptoms, prevention methods, and treatment …
What you need to know about flu treatments as cases spike ...
5 days ago · As flu cases rise across the U.S., those who end up contracting the virus have treatments available that may help reduce duration of symptoms or severity of illness.
Flu is surging nationwide. Hospitalizations nearly doubled in ...
5 days ago · The new variant of Influenza A, or H3N2, has been given the nickname 'super flu.' The fast-spreading virus has caused hospitalizations to nearly double in a week, the CDC …
Flu (Influenza): Causes, Symptoms, Types & Treatment
What is the flu (influenza)? The flu is an illness you get from the influenza virus. It causes symptoms like head and body aches, sore throat, fever and respiratory symptoms, which can …
Flu cases are surging across the US. Here’s where it’s happening.
4 days ago · A new flu variant is sweeping across the United States, causing millions of reported cases and doubling the number of hospitalizations in a surge doctors say may not end for …
Flu | Flu Symptoms | Stomach Flu | Influenza | MedlinePlus
Feb 28, 2024 · The flu, also called influenza, is a respiratory infection caused by viruses. Each year, millions of Americans get sick with the flu. Sometimes it causes mild illness. But it can …