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Lymphatic filariasis (LF) is one of the neglected tropical diseases targeted for elimination as a public health issue in the world by 2020. To achieve this goal, one of the strategies is interruption of transmission using chemotherapy (mass drug administration). Burkina Faso in west Africa, an endemic country, has endorsed this resolution. In 2000, all Sanitary Districts (SD) in the country were endemic, and then a national elimination program has made it possible to stop mass treatment in 45 out of 70 SD over 12 years. Sixteen years later, 13 other SD were reeligible for Transmission Assessment Surveys (TAS). This study aimed to determine the current level of the Mass drugs Administration (MDA) impact indicators in these 13 targeted SD in order to decide whether we need to continue MDA. Method: It was a descriptive study that took place from June to September 2017 in 13 SD regrouped into 7 Evaluation Units (EU). The population of the study was 6 to 7 years old children. The community-based cluster survey method was used. The diagnostic test used to detect Wuchereria bancrofti’s circulating antigen (W. bancrofti) is the Filariasis Test Strip (FTS). The critical threshold of positivity was set at 18 positive subjects per EU. Results: We sampled a total of 12,060 children, 48.9% were female and 51.1% male. In the 7 EU, 13 children were positive to W. bancrofti test. The average antigenic prevalence was 0.11% (13/12,060). In all EU, the number of positive subjects was below the critical threshold. Conclusion: At the end of this evaluation of the transmission of lymphatic filariasis in 13 SD of Burkina Faso, we can tell the MDA could be stopped in these areas without risk of resurgence of the disease, according to the current recommendations of WHO. This can be possible by setting up post-TMM surveillance, considering migratory flows, and including villages where positive cases were found to search possible residual transmission zones.

Evaluation of Mass Drug Administration Impact on Transmission of Lymphatic Filariasis in 13 Sanitary Districts in Burkina Faso