OCCUPATION AND HEALTH ›› 2026, Vol. 42 ›› Issue (6): 806-811.

• Original article • Previous Articles     Next Articles

Impact of PM2.5 on incidence of influenza among residents in Nanshan District of Shenzhen City

LI Zongnan1,2, ZHANG Lan3, YANG Pei2, YUAN Jianhui1,2,3()   

  1. 1 Guangdong Medical UniversityDongguanGuangdong 523000, China
    2 Shenzhen Nanshan District Center for Disease Control and Prevention(Shenzhen Nanshan District Health Supervision Institute)ShenzhenGuangdong 518054, China
    3 Southern Medical UniversityGuangzhouGuangdong 510515, China
  • Received:2025-06-06 Revised:2025-07-12 Online:2026-03-15 Published:2026-04-03
  • Contact: YUAN Jianhui

Abstract:

Objective To investigate the influence of fine particulate matter(PM2.5) on the incidence of influenza among residents in Nanshan District of Shenzhen City,and provide data support for preventing influenza outbreaks. Methods The air pollutants,meteorological monitoring data and influenza monitoring data from 2019 to 2023 were collected. The generalized additive model (GAM) was used to fit single pollutant model and double pollutant model to analyze the influence of PM2.5 on the incidence of influenza among residents in Nanshan District of Shenzhen City. Results PM2.5 had the most significant effect on the incidence of influenza in residents with a cumulative lag of 0-2 days(lag02). Every increase of PM2.5 concentration of 10 μg/m3 increased the risk of influenza incidence by 1.53%(95%CI:1.008-1.022). In men and women,the relative risk(RR) was 1.014(95%CI:1.007-1.022,P<0.05) and 1.017(95%CI:1.010-1.024,P<0.05),respectively. In age stratification,PM2.5 had the greatest effect on 0-<5 years old,with an RR value of 1.017(95%CI:1.011-1.024,P<0.05). In the seasonal stratification,PM2.5 had the most significant effect on the incidence of influenza when the temperature drops,and its RR value was 1.029(95%CI:1.023-1.034,P<0.05). Conclusion The short-term exposure of PM2.5 affects the incidence of influenza among residents in Nanshan District of Shenzhen City,the susceptible population is children aged 0-<5 years old,and the cold season is the high incidence season.

Key words: Generalized additive model, Fine particulate matter, Influenza, Relative risk

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