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China’s 1-3-7 surveillance and response strategy for malaria elimination: Is case reporting, investigation and foci response happening according to plan?

引用

Infectious Diseases of Poverty 2015年第1期4卷 465-473页

作者： Shui-Sen Zhou Shao-Sen Zhang Li Zhang Aafje ECRietveld Andrew RRamsay Rony Zachariah Karen Bissell Rafael Van den Bergh Zhi-Gui Xia Xiao-Nong Zhou Richard ECibulskis National Institute of Parasitic Diseases Chinese Center for Disease Control and PreventionKey Laboratory of Parasite and Vector BiologyMOHWHO Collaborating Centre for Tropic DiseasesNational Center for International Research on Tropical Diseases207 Rui Jin Er RoadShanghai200025People’s Republic of China Global Malaria Programme World Health Organization20 Avenue AppiaCH-1211Geneva 27Switzerland Special Programme for Research and Training in Tropical Diseases(TDR) 20 Avenue AppiaCH-1211Geneva 27Switzerland Médecins Sans Frontieres Brussels Operational CentreLuxembourgLuxembourg International Union Against Tuberculosis and Lung Disease ParisFrance

Background:The China’s 1-3-7 strategy was initiated and extensively adopted in different types of counties(geographic regions)for reporting of malaria cases within 1 day,their confirmation and investigation within 3 days,and the appropriate public health response to prevent further transmission within 7 days.Assessing the level of compliance to the 1-3-7 strategy at the county level is a first step towards determining whether the surveillance and response strategy is happening according to plan.This study assessed if the time-bound targets of the 1-3-7 strategy were being sustained over time.Such information would be useful to improve implementation of the 1-3-7 strategy in China.Methods:This cross-sectional study involved country-wide programmatic data for the period January 1st 2013 to June 30th 2014.Data variables were extracted from the national malaria information system and included socio-demographic information,type of county,date of diagnosis,date of reporting,date of case investigation,case classification(indigenous,or imported,or unknown),focus investigation,date of reactive case detection(RACD),and date of indoor residual spraying(IRS).Summary statistics and proportions were used and comparisons between groups were assessed using the chi-square test.Level of significance was set at a P-value≤0.05.Results:Of a total of 5,688 malaria cases from 731 counties,there were 55(1%)indigenous cases(only in Type 1 and Type 2 counties)and 5,633(99%)imported cases from all types of counties.There was no delay in reporting malaria cases by type of county.In terms of case investigation,97.5%cases were investigated within 3 days with the proportion of delays(1.5%)in type 2 counties,being significantly lower than type 1 counties(4.1%).Regarding active foci,96.4%were treated by RACD and/or IRS.Conclusions:The performance of 1-3-7 strategy was encouraging but identified some challenges that if addressed can further improve implementation.

关键词： 1-3-7 strategy Malaria elimination Surveillance and response

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