Abstract：Objective To investigate the distribution of the stage Ⅲ larvae of Gnathostoma in eel for the risk assessment of food-borne parasitic disease. Methods The samples were collected from five counties in northern Fujian，more than 20 eels were collected from each county. The insect bodies were collected and observed under the microscope according to GB 10136-2015“National standard for food safety in animal aquatic products”. Results Totally 110 eels were collected and examined in the five counties, with 14 positive eels and the total infection rate was 12.7% (14/110). Totally 45 stage Ⅲ larvaes of Gnathostoma were found in 14 positive eels. The mean infectiosity was 3.2 (1～18). The stage Ⅲ larvae of Gnathostoma were mostly distributed in the muscle（29 larvaes，64.4%)）,followed by the viscera (16 larvaes，35.6%). The mean infection rate of muscle was 12.7% (14/110) and the mean infectiosity was 2.1. The mean infection rate of viscera was 2.7% (3 /110) and the mean infectiosity was 5.3. Conclusion The eels in northern Fujian were infected by the stage Ⅲ larvae of Gnathostoma. The infection rate of eels in some counties reached up to 50.0%. The infection rate of muscle is higher than that of viscera. It is important to strengthen the surveillance of parasite in aquatic products for the foodborne parasitic disease control and prevention.
2020, Vol. 26 
