Cases analysis of visceral leishmaniasis diagnosed at preventive medicine clinic of Sichuan CDC from 2020 to 2023
Objective To analyze the epidemiological characteristics of cases diagnosed with visceral leishmaniasis in the outpatient department of Sichuan Center of Disease Control and Prevention from 2020 to 2023,and to provide basis for optimizing control measures of visceral leishmaniasis in Sichuan.Methods Suspected cases of leishmania were diagnosed by using the rapid detection reagent strip of visceral leishmaniasis antibody(RK39)or bone marrow smears.Positive indicators of RK39 test or bone marrow smears were collected,and descriptive epidemiological analysis of cases was performed by using Excel 2020.Results From 2020 to 2023,325 suspected cases of leishmania were admitted to the outpatient department of the Centers for Disease Control and Prevention,with 36 confirmed cases and an average positive rate of 11.08％.The gender ratio of male to female onset was 11∶1.The positive cases were mainly distributed in Jiuzhaigou County and Heishui County,accounting for 19.44％and 11.11％of the infected population,respectively.The cases were mainly farmers aged over 50 years,and children under 18 years old accounted for less.The positive rates of visceral leishmaniasis in Spring,Summer,Autumn and Winter were 10.11％,11.90％,12.99％,and 9.33％,respectively.Among the 36 cases,only 12 cases were diagnosed as visceral leishmaniasis at the first visit in local medical institutions,with a rate of misdiagnosis being 66.67％.Conclusions Visceral leishmaniasis is prone to misdiagnosis and missed diagnosis.It's necessary to further improve the diagnosis and treatment level of grassroots medical institutions,strengthen the prevention and control of sandflies in epidemic areas in long term,and strengthen health education and protection for susceptible populations in epidemic areas.
visceral leishmaniasisepidemiological characteristicsSichuan Area
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