Relationship between meteorological conditions and respiratory syncytial virus in a tropical country
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Fecha
2015
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Publicado en
Epidemiology and Infection, 1469-4409, Vol. 143, Nro. 12, 2015, p. 2679-2686
Publicado por
Cambridge University Press
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Descripción
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.
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Keywords
Children, Climatic factors, Epidemic, Respiratory syncytial virus