湖北省黑热病流行态势的评估

[目的 ]复查湖北省自 1989年起陆续报告的 14例“黑热病”,及评估我省黑热病的流行现况。 [方法 ]复查“黑热病”患者的骨髓片、免疫学检查 (L DT、IFAT)、接种动物及真菌培养、媒介 (白蛉 )和保虫宿主 (犬 )的调查。[结果 ]除 1例输入的和 1例残存的皮肤型黑热病外 ,其余 12例为播散型荚膜组织胞浆菌病。1997～ 1999年在 9个地市的 2 3个县 (市 )的 2 5个乡镇进行了免疫学监测 ,对 13 890人采用利什曼素皮内试验 (L DT) ,阳性率 0 .0 0 7% ,40岁以下的人群无阳性。其中 175 6人作间接荧光抗体试验 (IFAT) ,结果均为阴性。在调查区内未发现中华白蛉。查犬 30 2只 ,未发现病犬。 [结论 ]湖北省已消灭黑热病 ,且防治成果巩固

EVALUATION OF PREVALENT STATUS OF KALA-AZAR IN ENDEMIC AREA OF HUBEI PROVINCE *

OBJECTIVE: To identify the diagnosis of 14 cases with "kala-azar" previously reported in Hubei Province since 1989 and to evaluate the present status of the disease. METHODS: Bone marrow smear, immunological test (LDTand IFAT), mouse inoculation, fungi culture, vector (Phlebotomus) and reservoir host (dog) survey. RESULTS: Among the 14 cases, 12 cases were progressive disseminated histoplasmois, one was an imported case and another one was a remnant skin type "kala-azar" case. An immunological survey was conducted during 1997-1999 in 25 townships located in 23 counties of 9 prefectures and cities. A total of 13,890 persons had been examined by LDT, the positive rate was 0.07%, no positive case was found among the persons under 40 years of age. During the survey, 1,756 persons had been examined by IFAT, the results were negative. No Phlebotomus chinensis had been found in the surveyed area. A total of 302 dogs were examined, no sick dog had been found. CONCLUSION: Kala-azar has been eradicated in Hubei Province.