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1987年5～6月岳阳市第一中学西藏班学生原发型肺结核暴发流行。该班学生来自西藏林芝地区,平均海拔4000m,气温低,湿度大,空气稀簿,交通不便,96％为藏族。西藏结核病感染率为11.33％,患病率1.26％,原发型肺结核占32.4％,卡介苗接种未普及。该批学生1985及1986年至岳阳市就读,当地海拔800m,气候温和,雨量充沛,水陆交通方便,本省同年龄组肺结核感染率为11.22％,患病率0.83％,69.5％为浸润型肺结核,1979年市区新生儿卡介苗接种达92.2％。
From May to June 1987, the first middle school of Yueyang City, Tibet students primary pulmonary tuberculosis outbreak. The students in this class came from Nyingchi region of Tibet with an average altitude of 4000m. The temperature is low, the humidity is high, and the air is scarce. Traffic is inconvenient and 96% is Tibetan. The prevalence rate of tuberculosis in Tibet is 11.33%, prevalence rate is 1.26%, primary pulmonary tuberculosis is 32.4%, BCG vaccination is not universal. The students in 1985 and 1986 to Yueyang City, the local elevation of 800m, mild climate, abundant rainfall, water and land transportation convenience, the same age group in the province of tuberculosis infection rate was 11.22%, the prevalence rate of 0.83%, 69.5% of infiltrating tuberculosis, In 1979 urban neonatal BCG vaccination reached 92.2%.