The effect of ambient temperature on the activity influenza like illness andlaboratory-confirmed influenza in Wuxi City
10.16462/j.cnki.zhjbkz.2019.2019.11.018
- Author:
Juan LIU
1
;
Chao SHI
;
Qi ZHANG
;
Ping SHI
;
Yu-meng GAO
;
Yu-jun CHEN
;
Li-hua WANG
;
Jing BAO
;
Yuan SHEN
Author Information
1. Department of Acute Infectious Disease Control and Prevention, Wuxi Center for Disease Control and Prevention, Wuxi 214023, China
- Publication Type:Research Article
- Keywords:
Ambient temperature;
Influenza like illness;
Influenza;
Distributed lag non-linear models (DLNM)
- From:
Chinese Journal of Disease Control & Prevention
2019;23(11):1389-1393
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the effect of ambient temperature on the activity influenza like illness (ILI) and laboratory-confirmed influenza (LAB) in Wuxi City. Methods Daily data of meteorological, ILI and detected influenza virus from 31 December 2012 to 31 December 2017 were collected. Distributed lag non-linear model (DLNM) was used to evaluate the exposure-lag-response of ILI and LAB activity to daily ambient temperature.Results During the period, the overall ILI% was 4.96% and influenza detection positive rate was 12.28% in Wuxi city. The overall cumulative association analysis suggested non-linear relationship between ambient temperature and influenza: U-shaped for ILI, while L-shaped relationship for LAB. Low temperature (＜10℃ ) had strong and longer delay effect than hightemperature (＞20℃ ) for ILI. The cold effect for LAB was stronger and longer delay，and the low temperature (＜10℃ ) was risk factor for LAB. Conclusions The ambient temperature significant correlates with ILI and LAB, and low temperature might be risk factor with lag effect.
