| [epidemiological analysis of poliomyelitis cases in 1994, china]. | in 1994, the number of reported polio cases was 307 in china. this number was 53% lower than that in 1993, and was the lowest record ever in china. in 1994, the distribution of polio cases was highly dispersed and the number of outbreak was reduced obviously. of 225 counties which reported polio cases in 1994, polio outbreak occured in 2 counties. cases due to polio outbreak accounted for 4.2% of the total cases. the distribution of polio wild virus was narrow but the regional difference still e ... | 1995 | 8728953 |