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) 1·56-6·31, 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.
Variable | IRR (95% CI) | P value |
Wind speed (m/s) | 22.30 (0.29-1689.60) | 0.160 |
Rainfall (mm) | 1.008 (1.00-1-01) | 0.048 |
Temperature (C) | 3.14 (1.56-6.31) | 0.001 |
Relative humidity (%) | 1.00 (0.70-1.43) | 0.980 |
Solar radiation (W/m2) | 0.99 (0.96-1.02) | 0.579 |
IRR, Incident rate ratio; CI, confidence interval.
- Copyright ©ERS 2015