1, China's water resources and aquatic resources rich in the south and the central plains of the higher rate of infection, and infected with parasites have species differences.
2, Jiangsu, Sichuan, the highest infection rate, in which Jiangsu can trypanosomes infection rate of 86, 00%, hidden neo-Echinococcus infection rate of 97, 00%. In Sichuan, the infection rate of Echinococcus granulosus was 57,40%, and the infection rate of Echinococcus granulosus was 41,20%.
3, eels infected with parasites in China's mainland Sichuan, Jiangsu and other areas more common. Sichuan area eels are mainly hidden by the new Echinoderma, gastric tumor nematode, saw margin leaf-shaped trematode infection; and Jiangsu area eels infected with parasites of many kinds, high infection rate, high intensity of infection, the species are mainly hidden by the new Echinoderma, can trypanosomes, capillary nematodes, etc., jaws nematodes and other eel parasites may be pathogenic to the human body.