Influenza (flu) - Symptoms and causes - Mayo Clinic Symptoms of the flu such as a sore throat and a runny or stuffy nose are common You may also get these symptoms with other illness such as a cold But colds tend to start slowly, and the flu tends to come on quickly, within two or three days after you come in contact with the virus
A Day-by-Day Guide to Flu Stages - Verywell Health For most people, flu stages evolve across five to seven days after symptoms appear Here is a day-by-day guide to the flu and tips to boost your recovery
Flu (Influenza): Causes, Symptoms, Types Treatment What is the flu (influenza)? The flu is an illness you get from the influenza virus It causes symptoms like head and body aches, sore throat, fever and respiratory symptoms, which can be severe Flu is most common in winter months, when many people can get sick at once (an epidemic)
Common Symptoms of the Flu: Early Signs, Stages 2026 Guide Common signs include chills, a dry cough, a sore throat, and a headache While most healthy adults recover within a week, certain groups are at high risk for complications like pneumonia Early recognition—ideally within the first 48 hours—is critical for the effectiveness of antiviral treatments