RS‑viirus, respiratoor-süntsütiaalne viirus
paramüksoviiruste hulka kuuluv, eriti lastel kopsupõletikku ning muid hingamisteede infektsioone tekitav viirus, mis koekultuurides põhjustab mitmetuumaliste hiidrakkude (süntsüütsiumide) tekkimist, a pneumovirus (species Human orthopneumovirus of the genus Orthopneumovirus) that usually causes mild infections of the upper respiratory tract and lungs, that is spread through contact with respirato, infectious agent of the respiratory system that typically produces a mild coldlike illness but in susceptible individuals, particularly infants under six months of age, is a major cause of severe and