Frequently Asked Questions
What Is Respiratory Syncytial Virus (RSV)?
RSV is a common virus that affects the lungs and respiratory airways.
It is usually mild but can cause serious symptoms in older adults and adults with certain medical conditions.
RSV can cause fever, cough, runny nose, headache, and tiredness. Most RSV symptoms are mild, but in more severe RSV infections, shortness of breath, difficulty breathing, or wheezing can occur.
People infected with RSV are usually contagious for 3 to 8 days. However, some adults with weakened immune systems can continue to spread the virus even after they stop showing symptoms for as long as 4 weeks.
Anyone can get RSV, and reinfection can happen throughout one’s life. However, older adults (over the age of 60 years) and adults with certain health conditions are at increased risk of severe RSV infection.