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Int. J. Environ. Res. Public Health 2015, 12(2), 1054-1068; doi:10.3390/ijerph120201054

Impacts of Tropical Cyclones and Accompanying Precipitation on Infectious Diarrhea in Cyclone Landing Areas of Zhejiang Province, China

1
Department of Epidemiology and Health Statistics, School of Public Health, Shandong University, 44 West Wenhua Road, Jinan 250012, China
2
Shandong University Climate Change and Health Center, 44 West Wenhua Road, Jinan 250012, China
3
National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping District, Beijing 102206, China
4
National Center for Public Health Surveillance and Information Services, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping District, Beijing 102206, China
These authors contributed equally to this work and should be regarded as co-first author.
*
Author to whom correspondence should be addressed.
Academic Editors: Kristie L. Ebi and Jeremy Hess
Received: 1 November 2014 / Accepted: 16 January 2015 / Published: 22 January 2015
(This article belongs to the Special Issue Extreme Weather-Related Morbidity and Mortality: Risks and Responses)
View Full-Text   |   Download PDF [1211 KB, uploaded 22 January 2015]   |  

Abstract

Background: Zhejiang Province, located in southeastern China, is frequently hit by tropical cyclones. This study quantified the associations between infectious diarrhea and the seven tropical cyclones that landed in Zhejiang from 2005–2011 to assess the impacts of the accompanying precipitation on the studied diseases. Method: A unidirectional case-crossover study design was used to evaluate the impacts of tropical storms and typhoons on infectious diarrhea. Principal component analysis (PCA) was applied to eliminate multicollinearity. A multivariate logistic regression model was used to estimate the odds ratios (ORs) and the 95% confidence intervals (CIs). Results: For all typhoons studied, the greatest impacts on bacillary dysentery and other infectious diarrhea were identified on lag 6 days (OR = 2.30, 95% CI: 1.81–2.93) and lag 5 days (OR = 3.56, 95% CI: 2.98–4.25), respectively. For all tropical storms, impacts on these diseases were highest on lag 2 days (OR = 2.47, 95% CI: 1.41–4.33) and lag 6 days (OR = 2.46, 95% CI: 1.69–3.56), respectively. The tropical cyclone precipitation was a risk factor for both bacillary dysentery and other infectious diarrhea when daily precipitation reached 25 mm and 50 mm with the largest OR = 3.25 (95% CI: 1.45–7.27) and OR = 3.05 (95% CI: 2.20–4.23), respectively. Conclusions: Both typhoons and tropical storms could contribute to an increase in risk of bacillary dysentery and other infectious diarrhea in Zhejiang. Tropical cyclone precipitation may also be a risk factor for these diseases when it reaches or is above 25 mm and 50 mm, respectively. Public health preventive and intervention measures should consider the adverse health impacts from tropical cyclones. View Full-Text
Keywords: tropical cyclone; precipitation; infectious diarrhea; bacillary dysentery; risk factor tropical cyclone; precipitation; infectious diarrhea; bacillary dysentery; risk factor
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Deng, Z.; Xun, H.; Zhou, M.; Jiang, B.; Wang, S.; Guo, Q.; Wang, W.; Kang, R.; Wang, X.; Marley, G.; Ma, W. Impacts of Tropical Cyclones and Accompanying Precipitation on Infectious Diarrhea in Cyclone Landing Areas of Zhejiang Province, China. Int. J. Environ. Res. Public Health 2015, 12, 1054-1068.

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