越来越多的情况表明,眼下农民工正成为受职业病危害的主要群体。特别是在一些农民工较为集中的非公有制企业,这种情况就显得更为严重。上海市有关部门的统计数字显示,去年上海市职业病发病率与2004年相比上升了12.1%,所发生的500多职业病例,多数患者是非公有制企业的农民工。该 An increasing number of cases show that migrant workers are now becoming major groups affected by occupational diseases. Especially in some non-public enterprises with more concentrated migrant workers, this situation is even more serious. Statistics from the relevant departments in Shanghai show that the incidence of occupational diseases in Shanghai was 12.1% more than in 2004 last year. More than 500 occupational cases occurred and most of them were migrant workers in non-public-owned enterprises. This