Objective To analyze the surveillance data of intercepted medical vectors at Zhongshan Port from 2017 to 2022, and to summarize the law of intercepted medical vectors at Zhongshan Port, so as to provide the reference for the formulation of vector surveillance strategies at the port and prevention of the infectious diseases transmission. Methods Descriptive statistical method was used to analyze the species composition, number, origin, and transportation route of vectors intercepted from inbound cargoes at Zhongshan Port from 2017 to 2022. Results From 2017 to 2022, the vectors intercepted at Zhongshan Port involved 51 species of 5 categories: cockroaches, flies, mosquitoes, rodents, and midges. Among the intercepted cockroaches, Periplaneta americana, P. australasiae, Panchlora nivea, and Blattella germanica accounted for 36.48%, 28.36%, 17.64%, and 13.37% of the total number, respectively. Megaselia scalaris, Musca domestica, Mu. sorbens, and Calliphora vicina accounted for 26.14%, 25.00%, 12.50%, and 11.36% of the total number of intercepted flies, respectively. Culex pipiens quinquefasciatus, Aedes togoi, and Ae. albopictus accounted for 85.11%, 7.98%, and 3.72% of the total number of mosquitoes, respectively. Rattus tanezumi was the main rodent species. Culicoides peregrinus was the predominant midge species. The cockroaches were mainly from Guyana, and the flies and mosquitoes were mainly from Hong Kong, China. The vectors were mainly carried into China through raw wood logs, containers, and inbound ships for maintenance. Wood logs carried various organisms, among which cockroaches were most common, with a percentage of 48.41%. Conclusions The intercepted vectors were diverse in species and in the source of origin, and six species were intercepted for the first time across domestic ports, with no domestic distribution, indicating high risks of vector invasion and associated potential public health problem. It is of great significance to further strengthen the detection, identification, surveillance, and control of vectors at ports.
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