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Type: Journal article
Title: Heat waves and morbidity: current knowledge and further direction-a comprehensive literature review
Author: Li, M.
Gu, S.
Bi, P.
Yang, J.
Liu, Q.
Citation: International Journal of Environmental Research and Public Health, 2015; 12(5):5256-5283
Publisher: MDPI AG
Issue Date: 2015
ISSN: 1660-4601
Statement of
Mengmeng Li, Shaohua Gu, Peng Bi, Jun Yang, Qiyong Liu
Abstract: In the past few decades, several devastating heat wave events have significantly challenged public health. As these events are projected to increase in both severity and frequency in the future, it is important to assess the relationship between heat waves and the health indicators that can be used in the early warning systems to guide the public health response. Yet there is a knowledge gap in the impact of heat waves on morbidity. In this study, a comprehensive review was conducted to assess the relationship between heat waves and different morbidity indicators, and to identify the vulnerable populations. The PubMed and ScienceDirect database were used to retrieve published literature in English from 1985 to 2014 on the relationship between heat waves and morbidity, and the following MeSH terms and keywords were used: heat wave, heat wave, morbidity, hospital admission, hospitalization, emergency call, emergency medical services, and outpatient visit. Thirty-three studies were included in the final analysis. Most studies found a short-term negative health impact of heat waves on morbidity. The elderly, children, and males were more vulnerable during heat waves, and the medical care demand increased for those with existing chronic diseases. Some social factors, such as lower socioeconomic status, can contribute to heat-susceptibility. In terms of study methods and heat wave definitions, there remain inconsistencies and uncertainties. Relevant policies and guidelines need to be developed to protect vulnerable populations. Morbidity indicators should be adopted in heat wave early warning systems in order to guide the effective implementation of public health actions.
Keywords: Heat waves; morbidity; emergency medical care; hospitalization
Rights: © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (
RMID: 0030029334
DOI: 10.3390/ijerph120505256
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