Aug 26, 2024 · Flu virus infection of the respiratory tract can trigger an extreme inflammatory response in the body and can lead to sepsis, the body's life-threatening response to infection. Flu also can make chronic medical problems worse.

Sep 18, 2024 · There are four types of influenza viruses: A, B, C, and D. Influenza A and B viruses cause seasonal epidemics of disease in people (known as flu season) almost every winter in the United States.

Learn about the current flu season and find resources related to flu surveillance and past seasons.

Aug 13, 2024 · Complications of flu can include bacterial pneumonia, ear infections, sinus infections and worsening of chronic medical conditions, such as congestive heart failure, asthma, or diabetes. Testing and diagnosis

H. influenzae (including Hib) are bacteria that can cause severe infections, primarily in children younger than 5 years old. View All

Bacteria called Haemophilus influenzae can cause many types of infections. Some of these infections are mild, while others are serious. In spite of its name, H. influenzae doesn't cause the flu. Vaccines can prevent infections from one type of H. influenzae, type b or Hib.

Nov 14, 2022 · Staphylococcus aureus, referred to as "staph," are bacteria commonly carried on the skin or in the nose of healthy people. Methicillin-resistant Staphylococcus aureus, or MRSA, are staph bacteria that have become resistant to antibiotics. The overall risk of developing a MRSA infection after flu is very low.

Sep 17, 2024 · When Are People with Flu Contagious? Influenza viruses can be detected in most infected persons beginning one day before symptoms develop and up to five to seven days after becoming sick. People with flu are most contagious during the first three days of their illness.

Sep 9, 2024 · CDC recommends early treatment as soon as possible for people who have flu or suspected flu who are at higher risk of serious flu complications, such as people with asthma, diabetes, or heart disease.

Sep 17, 2024 · Compared with flu, COVID-19 can cause more severe illness in some people. Compared to people infected with influenza virus, people infected with SARS-CoV-2 may take longer to show symptoms and may be contagious for longer periods of time.