Estimating the effectiveness of early control measures through school absenteeism surveillance in observed outbreaks at rural schools in Hubei, China.

<h4>Background</h4>School absenteeism is a common data source in syndromic surveillance, which allows for the detection of outbreaks at an early stage. Previous studies focused on its correlation with other data sources. In this study, we evaluated the effectiveness of control measures b...

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Autores principales:	Yunzhou Fan, Mei Yang, Hongbo Jiang, Ying Wang, Wenwen Yang, Zhixia Zhang, Weirong Yan, Vinod K Diwan, Biao Xu, Hengjin Dong, Lars Palm, Li Liu, Shaofa Nie
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/df199bd33e03431cbc80bd1df52d3223
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spelling	oai:doaj.org-article:df199bd33e03431cbc80bd1df52d32232021-11-25T05:59:33ZEstimating the effectiveness of early control measures through school absenteeism surveillance in observed outbreaks at rural schools in Hubei, China.1932-620310.1371/journal.pone.0106856https://doaj.org/article/df199bd33e03431cbc80bd1df52d32232014-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0106856https://doaj.org/toc/1932-6203<h4>Background</h4>School absenteeism is a common data source in syndromic surveillance, which allows for the detection of outbreaks at an early stage. Previous studies focused on its correlation with other data sources. In this study, we evaluated the effectiveness of control measures based on early warning signals from school absenteeism surveillance in rural Chinese schools.<h4>Methods</h4>A school absenteeism surveillance system was established in all 17 primary schools in 3 adjacent towns in the Chinese region of Hubei. Three outbreaks (varicella, mumps, and influenza-like illness) were detected and controlled successfully from April 1, 2012, to January 15, 2014. An impulse susceptible-exposed-infectious-recovered model was used to fit the epidemics of these three outbreaks. Moreover, it simulated the potential epidemics under interventions resulting from traditional surveillance signals. The effectiveness of the absenteeism-based control measures was evaluated by comparing the simulated datasets.<h4>Results</h4>The school absenteeism system generated 52 signals. Three outbreaks were verified through epidemiological investigation. Compared to traditional surveillance, the school absenteeism system generated simultaneous signals for the varicella outbreak, but 3 days in advance for the mumps outbreak and 2-4 days in advance for the influenza-like illness outbreak. The estimated excess protection rates of control measures based on early signals were 0.0%, 19.0-44.1%, and 29.0-37.0% for the three outbreaks, respectively.<h4>Conclusions</h4>Although not all outbreak control measures can benefit from early signals through school absenteeism surveillance, the effectiveness of early signal-based interventions is obvious. School absenteeism surveillance plays an important role in reducing outbreak spread.Yunzhou FanMei YangHongbo JiangYing WangWenwen YangZhixia ZhangWeirong YanVinod K DiwanBiao XuHengjin DongLars PalmLi LiuShaofa NiePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 9, p e106856 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yunzhou Fan Mei Yang Hongbo Jiang Ying Wang Wenwen Yang Zhixia Zhang Weirong Yan Vinod K Diwan Biao Xu Hengjin Dong Lars Palm Li Liu Shaofa Nie Estimating the effectiveness of early control measures through school absenteeism surveillance in observed outbreaks at rural schools in Hubei, China.
description	<h4>Background</h4>School absenteeism is a common data source in syndromic surveillance, which allows for the detection of outbreaks at an early stage. Previous studies focused on its correlation with other data sources. In this study, we evaluated the effectiveness of control measures based on early warning signals from school absenteeism surveillance in rural Chinese schools.<h4>Methods</h4>A school absenteeism surveillance system was established in all 17 primary schools in 3 adjacent towns in the Chinese region of Hubei. Three outbreaks (varicella, mumps, and influenza-like illness) were detected and controlled successfully from April 1, 2012, to January 15, 2014. An impulse susceptible-exposed-infectious-recovered model was used to fit the epidemics of these three outbreaks. Moreover, it simulated the potential epidemics under interventions resulting from traditional surveillance signals. The effectiveness of the absenteeism-based control measures was evaluated by comparing the simulated datasets.<h4>Results</h4>The school absenteeism system generated 52 signals. Three outbreaks were verified through epidemiological investigation. Compared to traditional surveillance, the school absenteeism system generated simultaneous signals for the varicella outbreak, but 3 days in advance for the mumps outbreak and 2-4 days in advance for the influenza-like illness outbreak. The estimated excess protection rates of control measures based on early signals were 0.0%, 19.0-44.1%, and 29.0-37.0% for the three outbreaks, respectively.<h4>Conclusions</h4>Although not all outbreak control measures can benefit from early signals through school absenteeism surveillance, the effectiveness of early signal-based interventions is obvious. School absenteeism surveillance plays an important role in reducing outbreak spread.
format	article
author	Yunzhou Fan Mei Yang Hongbo Jiang Ying Wang Wenwen Yang Zhixia Zhang Weirong Yan Vinod K Diwan Biao Xu Hengjin Dong Lars Palm Li Liu Shaofa Nie
author_facet	Yunzhou Fan Mei Yang Hongbo Jiang Ying Wang Wenwen Yang Zhixia Zhang Weirong Yan Vinod K Diwan Biao Xu Hengjin Dong Lars Palm Li Liu Shaofa Nie
author_sort	Yunzhou Fan
title	Estimating the effectiveness of early control measures through school absenteeism surveillance in observed outbreaks at rural schools in Hubei, China.
title_short	Estimating the effectiveness of early control measures through school absenteeism surveillance in observed outbreaks at rural schools in Hubei, China.
title_full	Estimating the effectiveness of early control measures through school absenteeism surveillance in observed outbreaks at rural schools in Hubei, China.
title_fullStr	Estimating the effectiveness of early control measures through school absenteeism surveillance in observed outbreaks at rural schools in Hubei, China.
title_full_unstemmed	Estimating the effectiveness of early control measures through school absenteeism surveillance in observed outbreaks at rural schools in Hubei, China.
title_sort	estimating the effectiveness of early control measures through school absenteeism surveillance in observed outbreaks at rural schools in hubei, china.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/df199bd33e03431cbc80bd1df52d3223
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Estimating the effectiveness of early control measures through school absenteeism surveillance in observed outbreaks at rural schools in Hubei, China.

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