Abstract:

Objective  To investigate the prevalence status of echinococcosis in Jiangyou area in Mianyang city for scientific evidences to plan control and preventive measures for this disease. Methods  Investigation was performed in the reported cases in Jiangyou county from 2005 through 2015, and ultrasound screening was carried out for the local infected subjects and population living neighborhood areas. The positive cases received further serological studies. In addition, the definitive and intermediate hosts were investigated, including detection of the hydatid cysts in the feces of dogs and dissection of the wild rodents captured. Results  A total of 8 cases of echinococcosis were investigated, in which 3 were local infections. Abnormal condition associated with liver cyst, abdominal mass and calcifications was identified in 91 of 3028 cases. Eighty-seven blood samples were obtained from subjects with abnormal ultrasound findings, and subjected to echinococcus IgG detection, which revealed positive rate of 9.20%. Detection in 503 portions of feces from dogs and 49 portions from cats showed no positive results. Ninety-one rodents were captured and dissected, and no positive infection was found. Conclusion  Local infection of echinococcosis was found in Jiangyou county. Although no new infection was reported, and pathogens were not detected, yet the transmission chain of echinococcosis must exist, suggesting that following epidemiological studies and strengthened prevention and control measures remain necessary.

Key words: Echinococcosis, Epidemiological investigation, Jiangyou county