Dec 19, 2025 · Learn more about the symptoms, causes and prevention of this potentially deadly viral infection that attacks the respiratory system.

Oct 8, 2025 · Unlike a cold, the flu tends to come on suddenly and makes you feel much worse than a cold. Common symptoms of the flu often include a fever but not always, as well as …

Oct 22, 2025 · Seasonal flu symptoms usually show up quickly, about 1 to 4 days after you're around someone who is sick. COVID-19 symptoms generally appear 2 to 14 days later.

Dec 19, 2025 · Learn more about the symptoms, causes and prevention of this potentially deadly viral infection that attacks the respiratory system.

Jun 8, 2024 · Flu viruses in other animals, such as birds, may be a risk to people. Learn more about the symptoms, causes, prevention and treatment for bird flu in people.

Apr 30, 2025 · This condition, often called stomach flu, is usually harmless, except for infants and people with immunosuppression. Symptoms can usually be managed.

Jan 9, 2024 · Symptoms include a sore throat, runny nose, fever, chills and muscle aches. Flu symptoms can make you feel awful. But if you're otherwise healthy, not pregnant and younger …

Oct 22, 2025 · Flu symptoms usually appear about 1 to 4 days after exposure to an influenza virus. COVID-19 can cause more-serious illnesses in some people than can the flu. Also, COVID …

Mar 23, 2023 · If you're generally healthy and develop flu symptoms, most people may not need to see a health care provider. But some people are at higher risk of flu complications.

Aug 13, 2020 · Symptoms of COVID-19 and the flu appear at different times and have some differences. With COVID-19, you may experience loss of taste or smell. COVID-19 symptoms …