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１９９２～１９９３年对西藏阿里部分地区进行了土拉菌病的血清流行病学调查，采自５个县的人、畜血清检测表明，人土拉感染阳性检出率为１．２％（４／３４９）；羊检出率为２１．２％（９０／４２５），检出率随年龄增大而呈上升趋势。在银盾革蜱春季活动高峰期，羊带蜱率几达１００％，带蜱指数为４０～７０。羊土拉感染水平与暴露机会密切相关。
Serological epidemiology of tulamosis was carried out in some areas of Ali, Tibet, from 1992 to 1993. Serum samples from people from 5 counties showed that the detection rate of human Tula infection was 1.2% (4 / 349). The detection rate of sheep was 21.2% (90/425). The detection rate increased with age. At the peak of the spring activity of silver mulberry ticks, the frequency of sheep’s ticks was as high as 100% and the tick index was 40-70. Rabbit infection levels are closely related to exposure.