Abstract: Objective To evaluate the dengue prevention and control effectiveness of government-purchased vector control services and to perfect the pattern of government-purchased pest control services in the emergency management of dengue. Methods We systematically collected the data about dengue cases, the assessment of epidemic foci, and the management and evaluation from the municipal mosquito vector control team for emergency response in Guangzhou, Guangdong province, China, 2019. We assessed the effectiveness of the team's performance by epidemic duration and cumulative case number at the epidemic focus. The rank sum test was used to analyze whether the epidemic situation was affected by the response, also different response, from the team. Results In 2019, a total of 1 478 local cases were reported in Guangzhou, distributed in 680 epidemic foci, including 143 (21.03%) foci of outbreaks. The team dealt with 28 epidemic foci, accounting for 4.12% of the total foci. The density of adult mosquitoes was significantly reduced after mosquito vector control from the team (t=6.909, P<0.001). Both the epidemic duration and case number were significantly lower in the foci where the treatment began within eight days after the epidemic emerged and there were at least two round actions than in the foci without the treatment (Z=3.984, 2.345, 2.048, and 3.586, all P<0.05). Conclusion Early and full-scale control of mosquitoes at dengue epidemic foci by the municipal mosquito vector control team for emergency response, in the form of government-purchased services, can contain the community spread of dengue. In future dengue prevention and control by mosquito vector control, more personnel should be added, and other control forces should be united to establish an effective mechanism of surveillance, evaluation, and emergency response.

Key words: Government-purchased services, Vector control, Dengue fever, Effectiveness evaluation

摘要： 目的 评估政府购买病媒生物防制服务在登革热疫情防控中的效果，完善政府购买有害生物防制（PCO）服务参与登革热疫情应急处置的防控模式。方法 系统收集2019年广州市登革热病例发病、疫点评估和市级蚊媒应急队处置和评估数据，通过疫情处置持续时间和疫点累计病例数评估市级蚊媒应急控制队处置效果，采用非参数秩和检验比较政府购买服务市级蚊媒应急队参与处置与否、不同处置之间疫情发展的不同。结果 2019年广州市共报告本地病例1 478例，分布在680个疫点，其中暴发疫点143个（21.03%），市级蚊媒应急队共处置疫点28个，占总疫点数的4.12%，市级蚊媒应急队应急处置前后成蚊密度差异有统计学意义（t=6.909，P<0.001），市级蚊媒应急队介入时疫点发生时间<8 d和处置次数≥ 2次的疫点，疫情持续时间和疫点病例数均少于未介入处置组（Z=3.984、2.345、2.048、3.586，均P<0.05）。结论 以政府购买服务形式成立的市级蚊媒应急队早期、充分介入疫点灭蚊，能够达到控制登革热社区传播的效果。在今后的防控中应进一步增加人员配置，建立与其他防控力量有效的监测评估和应急处置机制。

关键词: 政府购买服务, 病媒生物防制, 登革热, 效果评价