Environmental factors and spatiotemporal distribution of Japanese encephalitis after vaccination campaign in Guizhou Province, China (2004–2016)

Abstract Background Although a vaccination campaign has been conducted since 2004, Japanese encephalitis (JE) is still a public health problem in Guizhou, one of the provinces with the highest incidence of JE in China. The aim of this study was to understand the spatiotemporal distribution of JE and...

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Autores principales:	Suye Zhao, Yidan Li, Shihong Fu, Ming Liu, Fan Li, Chunting Liu, Jing Yu, Liping Rui, Dingming Wang, Huanyu Wang
Formato:	article
Lenguaje:	EN
Publicado:	BMC 2021
Materias:	Japanese encephalitis Spatial analysis Spatial epidemiology Mosquito Vaccine Infectious and parasitic diseases RC109-216
Acceso en línea:	https://doaj.org/article/57d0106a603249d8976da721f44fde62
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spelling	oai:doaj.org-article:57d0106a603249d8976da721f44fde622021-11-28T12:41:55ZEnvironmental factors and spatiotemporal distribution of Japanese encephalitis after vaccination campaign in Guizhou Province, China (2004–2016)10.1186/s12879-021-06857-31471-2334https://doaj.org/article/57d0106a603249d8976da721f44fde622021-11-01T00:00:00Zhttps://doi.org/10.1186/s12879-021-06857-3https://doaj.org/toc/1471-2334Abstract Background Although a vaccination campaign has been conducted since 2004, Japanese encephalitis (JE) is still a public health problem in Guizhou, one of the provinces with the highest incidence of JE in China. The aim of this study was to understand the spatiotemporal distribution of JE and its relationship with environmental factors in Guizhou Province in the post-vaccination era, 2004–2016. Methods We collected data on human JE cases in Guizhou Province from 2004 to 2016 from the national infectious disease reporting system. A Poisson regression model was used to analyze the relationship between JE occurrence and environmental factors amongst counties. Results Our results showed that the incidence and mortality of JE decreased after the initiation of vaccination. JE cases were mainly concentrated in preschool and school-age children and the number of cases in children over age 15 years was significantly decreased compared with the previous 10 years; the seasonality of JE before and after the use of vaccines was unchanged. JE incidence was positively associated with cultivated land and negatively associated with gross domestic product (GDP) per capita, vegetation coverage, and developed land. In areas with cultivated land coverage < 25%, vegetation coverage > 55%, and urban area coverage > 25%, the JE risk was lower. The highest JE incidence was among mid-level GDP areas and in moderately urbanized areas. Conclusions This study assessed the relationship between incidence of JE and environmental factors in Guizhou Province. Our results highlight that the highest risk of JE transmission in the post-vaccination era is in mid-level developed areas.Suye ZhaoYidan LiShihong FuMing LiuFan LiChunting LiuJing YuLiping RuiDingming WangHuanyu WangBMCarticleJapanese encephalitisSpatial analysisSpatial epidemiologyMosquitoVaccineInfectious and parasitic diseasesRC109-216ENBMC Infectious Diseases, Vol 21, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Japanese encephalitis Spatial analysis Spatial epidemiology Mosquito Vaccine Infectious and parasitic diseases RC109-216
spellingShingle	Japanese encephalitis Spatial analysis Spatial epidemiology Mosquito Vaccine Infectious and parasitic diseases RC109-216 Suye Zhao Yidan Li Shihong Fu Ming Liu Fan Li Chunting Liu Jing Yu Liping Rui Dingming Wang Huanyu Wang Environmental factors and spatiotemporal distribution of Japanese encephalitis after vaccination campaign in Guizhou Province, China (2004–2016)
description	Abstract Background Although a vaccination campaign has been conducted since 2004, Japanese encephalitis (JE) is still a public health problem in Guizhou, one of the provinces with the highest incidence of JE in China. The aim of this study was to understand the spatiotemporal distribution of JE and its relationship with environmental factors in Guizhou Province in the post-vaccination era, 2004–2016. Methods We collected data on human JE cases in Guizhou Province from 2004 to 2016 from the national infectious disease reporting system. A Poisson regression model was used to analyze the relationship between JE occurrence and environmental factors amongst counties. Results Our results showed that the incidence and mortality of JE decreased after the initiation of vaccination. JE cases were mainly concentrated in preschool and school-age children and the number of cases in children over age 15 years was significantly decreased compared with the previous 10 years; the seasonality of JE before and after the use of vaccines was unchanged. JE incidence was positively associated with cultivated land and negatively associated with gross domestic product (GDP) per capita, vegetation coverage, and developed land. In areas with cultivated land coverage < 25%, vegetation coverage > 55%, and urban area coverage > 25%, the JE risk was lower. The highest JE incidence was among mid-level GDP areas and in moderately urbanized areas. Conclusions This study assessed the relationship between incidence of JE and environmental factors in Guizhou Province. Our results highlight that the highest risk of JE transmission in the post-vaccination era is in mid-level developed areas.
format	article
author	Suye Zhao Yidan Li Shihong Fu Ming Liu Fan Li Chunting Liu Jing Yu Liping Rui Dingming Wang Huanyu Wang
author_facet	Suye Zhao Yidan Li Shihong Fu Ming Liu Fan Li Chunting Liu Jing Yu Liping Rui Dingming Wang Huanyu Wang
author_sort	Suye Zhao
title	Environmental factors and spatiotemporal distribution of Japanese encephalitis after vaccination campaign in Guizhou Province, China (2004–2016)
title_short	Environmental factors and spatiotemporal distribution of Japanese encephalitis after vaccination campaign in Guizhou Province, China (2004–2016)
title_full	Environmental factors and spatiotemporal distribution of Japanese encephalitis after vaccination campaign in Guizhou Province, China (2004–2016)
title_fullStr	Environmental factors and spatiotemporal distribution of Japanese encephalitis after vaccination campaign in Guizhou Province, China (2004–2016)
title_full_unstemmed	Environmental factors and spatiotemporal distribution of Japanese encephalitis after vaccination campaign in Guizhou Province, China (2004–2016)
title_sort	environmental factors and spatiotemporal distribution of japanese encephalitis after vaccination campaign in guizhou province, china (2004–2016)
publisher	BMC
publishDate	2021
url	https://doaj.org/article/57d0106a603249d8976da721f44fde62
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Environmental factors and spatiotemporal distribution of Japanese encephalitis after vaccination campaign in Guizhou Province, China (2004–2016)

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