Laboratory and Semi-Field Evaluation on S-Methoprene Formulations Against <i>Anopheles sinensis</i> (Diptera: Culicidae) — Yuxi City, Yunnan Province, China

What is already known about this topic? Anopheles sinensis (An. sinensis) is the predominant malaria vector in China. The impact of S-methoprene on the emergence process of mosquito larvae suggests its potential as a control method for vector mosquitoes. However, the efficacy of S-methoprene in controlling An. sinensis has not yet been demonstrated. What is added by this report? The effectiveness of S-methoprene against An. sinensis was assessed in laboratory and semi-field conditions in Yunnan Province. What are the implications for public health practice? These results offer valuable options and guidance for utilizing S-methoprene products in malaria reimportation prevention areas within Yunnan Province.