Respiratory syncytial virus (RSV)

Alternative names:

RSV

Definition:

RSV is a member of the genus Pneumovirus. RSV causes upper and lower respiratory illness in infants and young children.

Causes, incidence, and risk factors:

Respiratory syncytial virus (RSV) is associated with outbreaks of acute respiratory illness each year in the winter and spring. In infants and young children, it can cause pneumonia, bronchiolitis (inflammation of the small airways of the lungs), and tracheobronchitis (croup). In healthy adults and older children, it is usually a mild respiratory illness. People with underlying pulmonary (lung) disease and the elderly are also susceptible to the infection. Although studies have shown that people produce antibody against the virus, infections continue to occur in people of all ages.