１９９５年４月１７日，２个月大的婴儿姚凯在安徽省铜陵市卫生防疫部门指定的计划免疫医院服用了预防小儿麻痹症的由三介脊髓灰质炎减毒活疫苗做成的“糖丸”后，竟因此患上了目前尚无药可治的小儿麻痹症，导致左腿严重瘫痪，右腿也有股萎缩和脚下垂，经法医鉴定为６级伤残。 On April 17, 1995, Yao Kai, a 2-month-old baby, took the “poliomyelitis” vaccine made from live attenuated three-polio vaccine to prevent poliomyelitis in the designated immunization hospital designated by the Sanitation and Anti-epidemic Department of Tongling City, Anhui Province. Pill ", actually suffer from the current there is no cure for polio, leading to serious paralysis of the left leg, right leg also shares atrophy and foot drooping, forensic identified as 6 disability.