RSV (respiratory syncytial virus) symptoms typically last from about 1 to 2 weeks. Most people start showing symptoms 4 to 6 days after exposure, and symptoms commonly last 2 to 8 days, but can sometimes persist longer. Mild cases usually resolve within a couple of weeks, but coughing or wheezing may last longer after other symptoms subside. In infants or people with weakened immune systems, RSV can last longer and symptoms may be more severe, sometimes requiring hospitalization. The virus is usually contagious for 3 to 8 days but can be spread for up to a month in some cases, especially in infants or immunocompromised individuals.
Summary:
- Symptom onset: 4-6 days after exposure
- Symptom duration: Typically 2-8 days, commonly 1-2 weeks
- Possible longer symptoms: Lingering cough or wheezing beyond 2 weeks
- Contagious period: Usually 3-8 days, possibly up to 4 weeks in infants or immune-compromised
- More severe and prolonged in infants, elderly, and immune-weakened individuals
This timeline applies to most common cases of RSV infection.
