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Respiratory syncytial virus (RSV) is a very common virus. This virus causes mild, cold-like symptoms in adults and older healthy children. It can cause serious respiratory infections in young babies, especially those in certain high-risk groups.
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Respiratory syncytial virus (RSV) is a virus that can cause severe lower respiratory infections in children younger than two years of age and milder upper respiratory infections in older children and adults. RSV infection in young children is also called bronchiolitis , because it is marked by inflammation of the bronchioles, the narrow airways that lead from the large airways (bronchi) to the tiny air sacs (alveoli) in the lungs.
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