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通过近２０年的调查研究，弄清了四川省（内脏利什曼病ＶＬ）流行因素及特点。犬是该病主要传染源，ＶＬ的发生和流行与犬的数量及其感染率有着密切关系。犬的感染率超过１５％可出现ＶＬ流行，低于１５％ＶＬ发病率低。１０岁以下儿童发病占患者总数的７２．２％，只要不养狗就可以控制新生儿童感染，ＶＬ病人的分布主要在沿江、河的滩地和山坡上的居民聚居地。消灭病犬、治疗病人和在疫点用杀虫剂滞留喷洒能有效控制ＶＬ流行。１９９４年的发病人数为２０例，比１９９０年的１１７例下降了８２．９％。
Through nearly 20 years of investigation and study, we have ascertained the epidemiological factors and characteristics of Sichuan Province (visceral leishmaniasis VL). Dog is the main source of infection, the occurrence and prevalence of VL and the number of dogs and their infection rates are closely related. VL prevalence of more than 15% of dogs can occur, the incidence of less than 15% VL is low. The incidence of children under the age of 10 accounted for 72.2% of the total number of patients, as long as no dogs can control neonatal infections, VL patients are mainly distributed along the river, beach and hillside residential areas. Elimination of sick dogs, treatment of patients and insecticides in the epidemic stranded spray can effectively control the spread of VL. The number of cases in 1994 was 20, down 82.9% from 117 in 1990.