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

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.

Oct 24, 2025 · Get answers to your flu vaccine questions, including whether the vaccines are effective, what forms are available and what side effects to expect.

Jun 8, 2024 · Bird flu, also called avian influenza, is caused by influenza type A virus infections in bird species. Depending on the strain, bird flu may cause the bird to have no symptoms, mild …

Mar 23, 2023 · Find out more about flu caused by the H1N1 virus. Learn how to prevent and treat the flu.

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 …

Aug 13, 2020 · COVID-19 is caused by a new coronavirus called SARS-CoV-2, while influenza is caused by influenza A and B viruses. Symptoms of COVID-19 and the flu appear at different …

Dec 6, 2025 · La gripe es causada por un virus. Los virus de la influenza son diferentes de los virus de la gastroenteritis viral, que causan diarrea y vómitos. La mayoría de las personas que …