Population genetic diversity of invasive Pomacea snails and surveillance of Angiostrongylus cantonensis in Shanghai, East China

Although no A. cantonensis infections were detected in the snails examined in this survey, these negative findings do not preclude the possibility of low-prevalence or newly emerging infections. The wide distribution and high genetic diversity of Pomacea populations across Shanghai and East China highlight that suitable hosts are already well-established, emphasizing the ongoing risk of parasite introduction and spread into currently nonendemic regions. Continued molecular surveillance, public awareness, and strengthened biosecurity measures remain essential to effectively manage invasive snail populations and mitigate future public health threats.