Reappearance of Risk of Schistosomiasis Transmission and the Response After 27 Years of Interrupted Transmission - Guangdong Province, China, 2019

What is already known about this topic? No live specimens of the snail Oncomelania hupensis (O. hupensis) and indigenous infected cases of schistosomiasis japonicum have been found in Guangdong Province since 1993, but live O. hupensis was found again in 2019. This study conducted O. hupensis identification and elimination. What is added by this report? In 2019, live O. hupensis specimens were detected by routine surveillance in areas in Qujiang of Shaoguan City and Yingde of Qingyuan City, and an emergency response was launched immediately. What are the implications for public health practice? The suspected habitat of O. hupensis in originally endemic areas of schistosomiasis in Guangdong is still complicated, so it is necessary to record suspected habitats comprehensively and carry out scientific routine surveillance for O. hupensis.