Association between Long-Term Ambient PM2.5 Exposure and under-5 Mortality: A Scoping Review

Wahida Musarrat Anita (), Kayo Ueda, Athicha Uttajug, Xerxes Tesoro Seposo and Hirohisa Takano
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Wahida Musarrat Anita: Graduate School of Global Environmental Studies (GSGES), Kyoto University, Kyoto 615-8540, Japan
Kayo Ueda: Graduate School of Global Environmental Studies (GSGES), Kyoto University, Kyoto 615-8540, Japan
Athicha Uttajug: Department of Hygiene, Graduate School of Medicine, Hokkaido University, Hokkaido 060-8638, Japan
Xerxes Tesoro Seposo: Department of Hygiene, Graduate School of Medicine, Hokkaido University, Hokkaido 060-8638, Japan
Hirohisa Takano: Graduate School of Global Environmental Studies (GSGES), Kyoto University, Kyoto 615-8540, Japan

IJERPH, 2023, vol. 20, issue 4, 1-15

Abstract: Studies have established a link between exposure to fine particles (PM2.5) and mortality in infants and children. However, few studies have explored the association between post-birth exposure to PM2.5 and under-5 mortality. We conducted a scoping review to identify relevant epidemiological evidence on the association between post-birth ambient PM2.5 exposure and under-5 mortality. We searched PubMed and Web of Science for articles published between 1970 and the end of January 2022 that explicitly linked ambient PM2.5 and under-5 mortality by considering the study area, study design, exposure window, and child age. Information was extracted on the study characteristics, exposure assessment and duration, outcomes, and effect estimates/findings. Ultimately, 13 studies on infant and child mortality were selected. Only four studies measured the effect of post-birth exposure to PM2.5 on under-5 mortality. Only one cohort study mentioned a positive association between post-birth ambient PM2.5 exposure and under-5 mortality. The results of this scoping review highlight the need for extensive research in this field, given that long-term exposure to ambient PM2.5 is a major global health risk and child mortality remains high in some countries.

Keywords: ambient PM2.5; under-5 mortality; post-birth exposure; epidemiological studies; review (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2023
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