The relationship between RSV bronchiolitis and the development of asthma

: Respiratory syncytial virus (RSV) is the most common cause of bronchiolitis during infancy and is associated with subsequent wheezing and asthma, but the nature of this association is not fully understood. In that sense, RSV bronchiolitis may serve as a marker, reflecting predisposition of the individual for virus-induced wheezing early in life and/ or asthma later in life. This review discusses existing data on RSV infection and respiratory complications later in life, as well as the link between RSV and asthma.