Respiratory Syncytial Virus

Respiratory syncytial virus, or RSV, causes respiratory tract and lung infections in infants and young children.

Infected fluids such as saliva and mucus are most/ contagious during the first two to four days after your child is sick.

RSV infection can last between two and eight days, but symptoms can last up to three weeks.

Almost all children are infected with RSV at least once before the age of two in the winter and early spring.