Epidemiology and Health

Original Article

Quantifying the effects of anomalies of temperature, precipitation, and surface water storage on diarrhea risk in Taiwan: Gerry Andhikaputra, Ayushi Sharma, Amir Sapkota, Hao He, Yu-Kai Lin, Li-Wen Deng, Yu-Chun Wang; Epidemiol Health. 2023;45:e2023024. Published online February 15, 2023; DOI: https://doi.org/10.4178/epih.e2023024

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Abstract

OBJECTIVES
Diarrheal disease continues to be a significant cause of morbidity and mortality. We investigated how anomalies in monthly average temperature, precipitation, and surface water storage (SWS) impacted bacterial, and viral diarrhea morbidity in Taiwan between 2004 and 2015.

METHODS

A multivariate analysis using negative binomial generalized estimating equations was employed to quantify age-specific and cause-specific cases of diarrhea associated with anomalies in temperature, precipitation, and SWS.

RESULTS

Temperature anomalies were associated with an elevated rate of all-cause infectious diarrhea at a lag of 2 months, with the highest risk observed in the under-5 age group (incidence rate ratio [IRR], 1.03, 95% confidence interval [CI], 1.01 to 1.07). Anomalies in SWS were associated with increased viral diarrhea rates, with the highest risk observed in the under-5 age group at a 2-month lag (IRR, 1.27; 95% CI, 1.14 to 1.42) and a lesser effect at a 1-month lag (IRR, 1.18; 95% CI, 1.06 to 1.31). Furthermore, cause-specific diarrheal diseases were significantly affected by extreme weather events in Taiwan. Both extremely cold and hot conditions were associated with an increased risk of all-cause infectious diarrhea regardless of age, with IRRs ranging from 1.03 (95% CI, 1.02 to 1.12) to 1.18 (95% CI, 1.16 to 1.40).

CONCLUSIONS

The risk of all-cause infectious diarrhea was significantly associated with average temperature anomalies in the population aged under 5 years. Viral diarrhea was significantly associated with anomalies in SWS. Therefore, we recommend strategic planning and early warning systems as major solutions to improve resilience against climate change.

Summary

Key Message
New study reveals the impact of climate on diarrheal diseases in Taiwan. Anomalies have been adopted to represent the changes in the historical context of climate. Temperature anomaly was linked to increased infectious diarrhea, especially in the young population. Anomaly in surface water storage (SWS) was associated with higher rates of viral diarrhea. Extreme weather events further contribute to the risks. Urgent need for strategic planning and early warning systems to combat climate change and improve resilience are recommended.

Citations

Citations to this article as recorded by

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Rainfall and Temperature Influences on Childhood Diarrhea and the Effect Modification Role of Water and Sanitation Conditions: A Systematic Review and Meta-Analysis
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International Journal of Environmental Research and Public Health.2024; 21(7): 823. CrossRef
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