Improving the performance of spray operators through monitoring and evaluation of insecticide concentrations of pirimiphos-methyl during indoor residual spraying for malaria control on Bioko Island
Improving the performance of spray operators through monitoring and evaluation of insecticide concentrations of pirimiphos-methyl during indoor residual spraying for malaria control on Bioko Island
复制标题
DOI：
10.1186/s12936-020-3118-y
复制
发表时间：
2020-01-21
期刊：
影响因子：
3
通讯作者：
Garcia, Guillermo A.
中科院分区：
文献类型：
--
作者：
Fuseini, Godwin;Ismail, Hanafy M.;Garcia, Guillermo A.
有必要对室内滞留喷洒进行质量控制，以确保喷洒操作员在喷洒的建筑物上存款正确的杀虫剂浓度，同时确认喷洒记录没有被伪造。方法采用高效液相色谱法（HPLC），对2018年赤道几内亚比奥科岛IRS轮中的有机磷杀虫剂甲基嘧啶核苷（Actellic 300CS）进行质量控制。在这一轮中，大约60个特种作业人员共喷洒了16 653所房屋的67 721个结构。据报喷洒的房屋被随机挑选进行质量控制测试。2018年对SO进行了两次监测，3月进行了初步筛选，随后与IRS管理团队分享结果并确定了需要再培训的SO，6月进行了第二次筛选，以监测培训的有效性。从木制和水泥结构上用粘合剂提取了杀虫剂样品，并使用HPLC进行了分析。结果研究表明，通过适当的质量控制措施和复习培训，次优喷洒减少，卧室（差异= 0.36，P < 0.001）和木制表面（差异= 0.41，P = 0.001）的浓度显著增加。此外，观察到SO的有效覆盖率增加，从3月份的80.7%提高到6月份的94.7%（McNemar检验; P = 0.03）。通过HPLC在一周内随机选择，定位和测试房屋的能力，导致了比奥科岛SOs性能的改善，使该项目能够更好地评估自己的性能。
Background Quality control of indoor residual spraying (IRS) is necessary to ensure that spray operators (SOs) deposit the correct concentration of insecticide on sprayed structures, while also confirming that spray records are not being falsified. Methods Using high-performance liquid chromatography (HPLC), this study conducted quality control of the organophosphate insecticide pirimiphos-methyl (Actellic 300CS), during the 2018 IRS round on Bioko Island, Equatorial Guinea. Approximately 60 SOs sprayed a total of 67,721 structures in 16,653 houses during the round. Houses that were reportedly sprayed were randomly selected for quality control testing. The SOs were monitored twice in 2018, an initial screening in March followed by sharing of results with the IRS management team and identification of SOs to be re-trained, and a second screening in June to monitor the effectiveness of training. Insecticide samples were adhesive-lifted from wooden and cement structures and analysed using HPLC. Results The study suggests that with adequate quality control measures and refresher training, suboptimal spraying was curtailed, with a significant increased concentration delivered to the bedroom (difference = 0.36, P < 0.001) and wooden surfaces (difference 0.41, P = 0.001). Additionally, an increase in effective coverage by SOs was observed, improving from 80.7% in March to 94.7% in June after re-training (McNemar's test; P = 0.03). Conclusions The ability to randomly select, locate, and test houses reportedly sprayed within a week via HPLC has led to improvements in the performance of SOs on Bioko Island, enabling the project to better evaluate its own performance.