Respiratory syncytial virus (RSV)

This fact sheet explains the signs and symptoms of RSV.

Respiratory syncytial (sin-city-al) virus (RSV) is the most common cause of respiratory and breathing infections in children. It is a virus that causes infection of the lungs and breathing passages, and is one of the most frequent causes of the common cold.

RSV can affect people of all ages. Most children aged under two years have been infected by RSV at some stage, and it is possible to get RSV over and over again. Good hygiene habits can reduce the chance of your child getting the virus or passing it on to others.