关键词: 肝毛细线虫, 旋毛虫, 感染率

Abstract:

Objective　To evaluate the situation of rats infected with Capillaria hepatica and Trichinella spiralis for providing evidence for the development of prevention and control of C. hepatica infections. Methods　Rats captured from the old quarter of urban areas and peripheral rural areas were numbered and brought to the laboratory for identification of species and physiological age, followed by dissection for the entire liver and partial hind leg muscles to produce microscopic sections for examining C. hepatica and T. spiralis. Results　The autopsy revealed 29 out of 199 rodents that had been infected with C. hepatica with the infection rate of 14.57%; of these Rattus norvegicus had the highest infection rate, 20.83%, followed by Mus musculus, 17.05%, and R. tanezumi the lowest, 4.65%. No infection was found in three shrews examined. The eighteen M. musculus captured in urban areas were all negative for T. spiralis infection, and the same was the leg muscle samples from the 199 animals.Conclusion　Suburban and rural areas are prevalent with C. hepatica infection. Though epidemiological investigations of houses with infected rodents revealed no evidence of human infections, there is a potential risk of C. hepatica human infection. In contrast, no evidence of T. spiralis infection among rats was found in the old quarter of urban areas and peri?urban rural areas.

Key words: Capillaria hepatica, Trichinella spiralis, Infection rate