Monitoring of Pathogens Carried by Imported Flies and Cockroaches at Shenzhen Ports

Overview

Journal Trop Med Infect Dis

Specialty Infectious Diseases

Date 2025 Feb 25

PMID 39998061

Authors

Siqi Zhang

Chunzhong Zhao

Guoping Liu

Liwei Guo

Ran Zhang

Junyu Yan

Jianan He

Cheng Guo

Affiliations

Soon will be listed here.

Abstract

This study tested the efficacy of xenomonitoring using contaminated flies and cockroaches at ports in Shenzhen by analysing sample data from imported flies and cockroaches from October 2023 to April 2024 to identify the pathogens they carried. Among all the samples of flies and cockroaches collected, and accounted for the highest proportion, 27.59% and 66.47%, respectively. Their positive rates for carrying were also the most significant, reaching 4.35% and 6.47%, respectively. The imported flies and cockroaches mainly came from Asia, with the highest proportion coming from Hong Kong, at 97.71% and 92.11%, respectively. Metagenomic sequencing indicated that the pathogens carried by the flies and cockroaches from different regions of Asia were generally similar but showed some differences. Flies from Southeast Asia, East Asia, South Asia, and West Asia and cockroaches from Southeast Asia, East Asia, and West Asia harboured unique opportunistic pathogens capable of causing gastrointestinal and respiratory infections in humans. Specifically, flies carried pathogens such as , , , and , while cockroaches carried , , and . Our findings provide data support for future risk assessments of pathogens carried by imported vectors.

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