[Poliomyelitis surveillance in Shandong Province from 1991-1994]

After a series of poliomyelitis outbreaks came about in Shandong province from 1988 to 1990, comprehensive measures including establishment of acute flaccid paralysis (AFP) surveillance system, introduction of mass immunization campaign of oral poliovirus vaccine (OPV) and enhancing management of poliomyelitis eradication activity, were carried out. The incidence of poliomyelitis decreased with the reported number of cases 95, 25, 22 and 17, in 1991, 1992, 1993 and 1994, respectively. A geographically sporadic distribution was noticed with no peak on seasonality. No confirmed case caused by wild poliovirus was identified from 1991 to 1994. Reporting incidence of AFP cases among children under 15 years old was increasing gradually with 1.00 per 10(5) population in 1993 and 1.89 in 1994. The results showed that the poliomyelitis eradication activity in Shandong province had reached a final stage but much efforts still need to be made to reach the target on poliomyelitis eradication.