<Tr> <Td> Genus: </Td> <Td> OrthoPneumovirus </Td> </Tr> <Tr> <Td> Species: </Td> <Td> Human orthopneumovirus </Td> </Tr> <P> Human respiratory syncytial virus (HRSV) is a syncytial virus that causes respiratory tract infections . It is a major cause of lower respiratory tract infections and hospital visits during infancy and childhood . A prophylactic medication, palivizumab, can be employed to prevent HRSV in preterm (under 35 weeks gestation) infants, infants with certain congenital heart defects (CHD) or bronchopulmonary dysplasia (BPD), and infants with congenital malformations of the airway . Treatment is limited to supportive care, including oxygen therapy and more advanced breathing support with CPAP or nasal high flow oxygen . </P> <P> In temperate climates there is an annual epidemic during the winter months . In tropical climates, infection is most common during the rainy season . </P>

Rsv disease is caused by the respiratory syncytial virus (rsv). rsv is a(n)