Carcinogenesis, Teratogenesis & Mutagenesis ›› 2022, Vol. 34 ›› Issue (2): 98-104.doi: 10.3969/j.issn.1004-616x.2022.02.004

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Relationships between particulate matter pollution and non-accidental deaths among residents in Fuzhou city before and after COVID-19

QU Ying1, ZHOU Quan2, CHEN Yifeng1, YANG Yan1, KANG Shuling1, HE Chenzhou1, JIANG Yu1, WU Chuancheng1, LIU Baoying1, XIANG Jianjun1   

  1. 1. Department of Preventive Medicine, School of Public Health, Fujian Medical University, Fuzhou 350122;
    2. Fuzhou Center for Disease Control and Prevention, Fuzhou 350004, Fujian, China
  • Received:2021-08-09 Published:2022-04-07

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Abstract: OBJECTIVE：To investigate relationships between atmospheric particulate matter pollution and non-accidental deaths among residents in Fuzhou City before and after the COVID-19 pandemic. METHODS： Daily air pollution data，meteorological data，and death registry data between 2016—2020 were collected for Fuzhou City. Time-series analysis with a quasi-Poisson regression based generalized linear model to the relationships before and after the COVID-19 pandemic after controlling for confounding factors including longterm trend，seasonality，day of week，and meteorological factors. RESULTS：After the occurrence of COVID-19，concentrations of PM2.5 decreased significantly. Before the COVID-19，significant impacts of PM2.5 on nonaccidental death were observed between lag1-2 days，with the greatest effects being lag day1，namely [ER= 1.69%，95%CI(0.79%，2.59%)] and [ER=0.93%，95%CI(0.49%，1.38%)]，respectively. By contrast，PM2.5 had no significant impacts on non-accidental death after the COVID-19 pandemic. Before the COVID- 19， significant impact of PM2.5 on respiratory-related death was observed on lag day1 [ER=3.01%，95%CI(0.35%， 5.74%)]，however，there was no significant effect after COVID-19. No noticeable changes were found on the relationships between PM2.5 and circulatory- and cardiovascular-related deaths. CONCLUSION：Decreased PM2.5 concentrations after COVID-19 reduced the risk of non- accidental death， particularly for respiratory-related death，indicating the necessity and effectiveness of air pollution control and prevention.

Key words: COVID-19, atmospheric particulate, mortality rate, time-series analysis

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