Abstract: Objective　To investigate the current prevalence of parasitic infections in murines captured from Dali City, so as to provide insights into improvements in the surveillance and control measures of human parasitic diseases in the city. Methods　 Seven natural villages were sampled from 4 townships in Dali City on November 2023, and murines were captured using murine traps in farmlands, grasslands and ditches neighboring the survey villages and characterized for species. Murines were sacrificed and dissected, and liver specimens were collected for detection of parasite eggs using microscopy. In addition, murine rectal feces were collected, and parasite eggs were identified in fecal samples using Kato⁃Katz technique, and Schistosoma japoninicum infection was detected using miracidial hateching test with nylon gauzes. Results　A total of 126 murines belonging to 12 species were captured, and Crocidura attenuata was the dominant species (34.92%, 44/126), followed by Eothenomys miletus (13.49%, 17/126) and Apodemus chevrier (13.49%, 17/126). A total of 17 murines representing 8 species were detected with parasitic infections, with an overall prevalence rate of 13.49% (17/126). Murine with parasitic infections were distributed in 4 natural villages, with the highest number of infections in C. attenuata (5), followed by in E. miletus (4). A total of 7 species of parasite eggs were detected in captured murines, and the highest prevalence of parasitic infections was seen in Schistosoma sinensium (5.56%, 7/126), followed by in Capillaria hepatica (3.17%, 4/126), S. japonicum (2.38%, 3/126), Strongyloides stercoralis (2.38%, 3/126), hookworm (2.38%, 3/126), Trichuris trichiura (1.59%, 2/126) and Hymenolepis nana (1.59%, 2/126). Mixed infections of S. japonicum, S. sinensium and C. hepatica were detected in one C. attenuata, one Rattus tanezumi and one R. norvegicus captured from the same natural village, with S. japonicum miracidia hatched from R. tanezumi fecal samples, and S. stercoralis and H. nana mixed infections were detected in one C. attenuata. Conclusions　The prevalence of parasitic infections was high in murines in Dali City in 2023, and the murine host animals are diverse and the species of parasites infecting murines are multiple, with a high risk of zoonotic transmission. Early warning and monitoring of parasitic infections, environmental improvements and murine control are recommended for integrated control of parasitic infections in murines.

Key words: Parasite, Murine, Infection, Dali City

摘要： 目的　掌握大理市鼠类寄生虫感染现状，为进一步完善该市人体寄生虫病监测和防控措施提供科学依据。方法　2023年11月选择大理市4个乡（镇）的7个自然村作为调查点，在调查村周边的田地、草丛、沟渠等鼠类活动环境中采用夹夜法布放鼠夹捕鼠，对捕获鼠类进行种属鉴定。解剖鼠体后取肝脏组织行压片镜检，检测肝组织中寄生虫虫卵；同时取其直肠粪便，采用改良加藤厚涂片法检测粪便中寄生虫虫卵，并采用尼龙绢袋集卵孵化法检测血吸虫感染情况。结果　共捕获鼠类12种126只，其中灰麝鼩为优势鼠种（34.92%，44/126），大绒鼠（13.49%，17/126）和齐氏姬鼠（13.49%，17/126）次之。共检出感染寄生虫的鼠类8种17只，鼠类寄生虫感染率为13.49%（17/126）。感染鼠类分布于4个自然村，其中灰麝鼩感染数量最多（5只），其次为大绒鼠（4只）。捕获鼠类共检出7种寄生虫虫卵，寄生虫感染率从高到低依次为中华血吸虫［5.56%（7/126）］、肝毛细线虫［3.17%（4/126）］、日本血吸虫［2.38%（3/126）］、粪类圆线虫［2.38%（3/126）］、钩虫［2.38%（3/126）］、鞭虫［1.59%（2/126）］、微小膜壳绦虫［1.59%（2/126）］。在同一个自然村捕获的1只灰麝鼩、1只黄胸鼠和1只褐家鼠均同时检出日本血吸虫、中华血吸虫和肝毛细线虫感染，且在该黄胸鼠粪便中孵化出血吸虫毛蚴；另有1只灰麝鼩同时感染粪类圆线虫和微小膜壳绦虫。结论　大理市鼠类寄生虫感染率高，鼠类宿主动物多样且感染谱广，存在较高的人畜共患风险。建议加强鼠类寄生虫感染预警监测、环境整治和灭鼠等综合性关口前移措施。

关键词: 寄生虫, 鼠类, 感染, 大理市