Association between meteorology and influenza in Shenzhen

Objective To assess the association between meteorology and influenza. Methods Records of ILI, meteorological factors and PM2.5 data were collected in Shenzhen during 2013-2014. Scatter plot and generalized additive model were used to analyze the relationship between meteorological factors and influenza. Results The pinnacle of influenza in Shenzhen mainly occured when the lowest average temperature per week was 20-27℃, relative humidity was 70%-85%,total precipitation per week was 0-150 mm and mean temperature difference was about 5.5℃. Generalized additive model displayed the lowest average temperature, relative humidity, total precipitation per week and mean temperature difference were associated with the influenza-like illness. Their RR(95% CI) were 0.978(0.976-0.979), 1.005(1.004-1.006), 1.016(1.012-1.020) and 1.028(1.023-1.033), respectively. Conclusions There may be a certain correlation between meteorology and influenza.