Dec 19, 2025 · An immune system that doesn't quickly clear out flu virus may raise the risk of getting the flu or getting flu complications. People may have a weakened immune system …

Dec 19, 2025 · To diagnose the flu, also called influenza, your healthcare professional does a physical exam, looks for symptoms of flu and possibly orders a test that detects flu viruses.

Oct 24, 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. Most people with the flu get better …

Oct 8, 2025 · Most people with the flu have a mild illness and don't need to see a healthcare professional. With some rest and self-care measures at home, the average healthy person can …

Oct 22, 2025 · What causes COVID-19 and flu? Viruses cause both COVID-19 and the flu. COVID-19 is caused by SARS-CoV-2, also known as severe acute respiratory syndrome …

From spring of 1918 to spring of 1919, the flu causes more than 550,000 deaths in the U.S. and more than 20 million deaths worldwide. In the fall of 1918 at Mayo Clinic, people with the flu …

Oct 14, 2025 · Like other flu vaccines, high-dose and adjuvanted flu vaccines are updated every year. This helps protect against the flu strains most likely to cause the flu during the upcoming …

Jun 21, 2024 · In some cases, wearing a mask might help protect you from getting the flu, also called influenza. But in general, protecting yourself from flu means taking a range of actions.

Oct 10, 2025 · Having the flu early in pregnancy may raise the risk of health problems in an unborn baby, called a fetus. The flu also can raise the risk of having a baby who has health …

Oct 16, 2024 · Influenza (flu) and COVID-19 are both highly contagious respiratory illnesses. COVID-19 is caused by infection with a coronavirus (SARS-CoV-2), and flu is caused by …