An expert assessment sponsored by the Indian government pointed to a variety of culprits, among them poor supervision, inadequate training, vaccine shortages and the emphasis given to polio.

• 一项由印度政府出资的专家评估报告指出了很多原因,包括监管不严、培训不够、疫苗短缺和过于重视对小儿麻痹症的预防等。