Virus causing upper respiratory infections, including the common cold, bronchiolitis, and croup, most commonly in children.
Any one of three related viruses that cause a variety of respiratory infections ranging in severity from the common cold to croup to a type of pneumonia. Parainfluenza viruses tend to cause illness predominantly in young children. By adulthood, most people have established immunity to the viruses and have no symptoms or only mild infections. Different types of the virus cause different forms of disease. The most common infection in children is the common cold.
A group of large RNA-containing viruses that cause infections of the respiratory tract producing mild influenza like symptoms. They are included in the paramyxovirus group.
These are included in the paramyxoviruses and divided into four types, all of which cause infection of the respiratory system. Children are commonly affected and the manifestations include croup, fever, and a rash.
A group of viruses that cause acute respiratory infections in humans, especially in children. Virtually all children in the U.S. have been infected by age 6.
One of a group of viruses that affect infants and young children. It causes respiratory infections that may be mild or may progress to pneumonia. Most infections are so mild as to be clinically inapparent.