How long does it usually take to recover from influenza A or B infection?

The course of influenza (including both type A and type B) can vary from person to person, but generally, symptoms in most healthy adults gradually improve within about a week. Common flu symptoms such as fever, cough, sore throat, muscle or joint pain, and fatigue are typically most severe during the first few days after onset, and then usually subside gradually. However, some individuals may experience prolonged fatigue and cough that can last for two weeks or longer. Children, older adults, pregnant women, and people with chronic health conditions may develop more severe influenza infections and may require a longer recovery period. It is important to rest, stay hydrated, and follow medical advice for treatment if infected with the flu. Seek immediate medical attention if symptoms are severe or continue to worsen.