| frequency of respiratory syncytial virus in hospitalized infants with lower acute respiratory tract infection in colombia. | in colombia, health workers obtained a nasopharyngeal wash from 103 infants aged less than 12 months hospitalized for acute lower respiratory infection (alri) at the general hospital of medellin during april 1994 to april 1995 so researchers could determine the frequency of alri caused by respiratory syncytial virus (rsv) in hospitalized children. immunofluorescence detected rsv infection in 43 (41.7%) patients. the presence of the following signs and symptoms allowed a clinical diagnosis of a ... | 1996 | 8970224 |