title: Relationship between meteorological conditions and respiratory syncytial virus in a tropical country.
abstract: This study aimed to determine which meteorological conditions are associated with respiratory syncytial virus (RSV) isolates in a population of children hospitalized with acute lower respiratory infection (ALRI) in Bogota, Colombia. In an analytical cross-sectional study, links were examined between the number of monthly RSV infections and monthly average climatic variation (temperature, relative humidity, rainfall, wind speed, solar radiation) between 1 January 2010 and 30 April 2011 in a population of hospitalized children aged <3 years with ALRI caused by RSV. Out of a total of 1548 children included in the study (mean age 9·2 ± 8·5 months), 1194 (77·1%) presented RSV infection during the 3-month period from March to May. In the multivariate analysis, after controlling for wind speed, relative humidity, and solar radiation, monthly average temperature [incident rate ratio (IRR) 3·14, 95% confidence interval (CI) 1·56-6·30, P = 0·001] and rainfall (IRR 1·008, 95% CI 1·00-1·01, P = 0·048) were independently associated with the monthly number of RSV infections. In conclusion, in Bogota, a tropical Latin American city, average temperature and rainfall are the meteorological variables most strongly associated with RSV isolation in children hospitalized with ALRI in the city.
authors.affiliation: Department of Pediatrics,School of Medicine,Universidad Nacional de Colombia.
authors.forename: C E
authors.initials: CE
authors.lastname: Rodriguez-Martinez
authors.affiliation: Department of Internal Medicine,School of Medicine,Universidad Nacional de Colombia.
authors.forename: M P
authors.initials: MP
authors.lastname: Sossa-Briceño
authors.affiliation: Research Unit,Military Hospital of Colombia,Bogota,Colombia.
authors.forename: R
authors.initials: R
authors.lastname: Acuña-Cordero
mesh_terms: D002675:Child, Preschool; D003105:Colombia / Q000453:epidemiology; D003430:Cross-Sectional Studies; D006801:Humans; D006813:Humidity; D007223:Infant; D011891:Rain; D018357:Respiratory Syncytial Virus Infections / Q000453:epidemiology*; D013472:Sunlight; D013696:Temperature; D013997:Time Factors; D014329:Tropical Climate; D014919:Wind
keywords: Children; climatic factors; epidemic; respiratory syncytial virus