Entomological Assessment in Tangerang, Indonesia: Post Transmission Assessment Survey of Lymphatic Filariasis Endemic Villages

摘要

A transmission assessment survey (TAS) has been conducted in 2014 following five years mass drug administration (MDA) of anti-filarial medication in Tangerang district. To assess vector density and transmission dynamic of lymphatic filariasis (LF) after the MDA implementation, entomological surveys were carried out in 2017 from August to September at Rajeg and Kemiri subdistrict. Adult filarial mosquito vectors were collected using double net-trapped human bait method. In addition, habitat characteristics were recorded. Abundance, frequency, and species dominance were analyzed. A total of 4462 mosquitoes from five genera Anopheles, Aedes, Armigeres, Culex and Mansonia were captured at both sites of which Culex quinquefasciatus has the highest relative abundance (n= 3510/4462, 78.75%) resulted in species dominance index of 0.62. The most common Cx. quinquefasciatus breeding site was drainage ditch (n=20/44, 45.5%). Excessive breeding sites may likely preserve the abundance of filarial vector Cx quinquefasciatus in these areas, highlighting the potential risk for the re-emergence of LF transmission. Routine vector control and surveillance is required to continuously monitor the filarial vector density and their habitats.