Association of Particulate Matter (PM2.5) With COVID-19 Infection and Mortality in Low-and Middle-income Asian Countries: A Systematic Review and Meta-analysis
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View abstract on PubMed
Summary
This summary is machine-generated.Particulate matter (PM2.5) pollution significantly increases the risk of COVID-19 infection in low- and middle-income Asian countries. Evidence for a link to COVID-19 mortality remains insufficient, highlighting the need for improved air quality policies.
Area Of Science
- Environmental Health
- Epidemiology
- Public Health
Background
- Low- and middle-income Asian countries face a high burden of particulate matter (PM2.5) pollution.
- Data on the association between PM2.5 exposure and COVID-19 outcomes in this region are limited.
Purpose Of The Study
- To quantify the association between PM2.5 exposure and the risks of COVID-19 infection and mortality in low- and middle-income Asian countries.
- To provide evidence for public health strategies and air quality control policies.
Main Methods
- Systematic review and meta-analysis of observational studies.
- Search of PubMed, Scopus, and other databases up to December 31, 2024.
- Random-effects model used to calculate pooled effect sizes and 95% confidence intervals (CIs).
Main Results
- Fourteen studies were included, showing a significant positive association between PM2.5 exposure and COVID-19 infection for both short-term (RR, 1.12; 95% CI, 1.07-1.18) and long-term exposure (RR, 1.41; 95% CI, 1.28-1.56).
- A non-significant positive association was found between short-term PM2.5 exposure and COVID-19 mortality (RR, 1.37; 95% CI, 0.80-2.33).
- High heterogeneity was observed, but findings for infection remained robust.
Conclusions
- PM2.5 exposure is a significant risk factor for COVID-19 infection in low- and middle-income Asian countries.
- Current evidence is insufficient to link PM2.5 exposure to COVID-19 mortality.
- Strengthened air quality control policies are crucial for mitigating respiratory pandemic impacts.
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