Sichuan And Yunnan-guizhou Adjacent Areas To Strengthen The Maintenance Of Non-polio Afp Surveillance And Strengthen The Immune Evaluation

Objective: The sensitivity, betimes, and integrality of 2000-2006 AFP surveillance system and statistics of the intensified immunization program for poliomyelitis in recent 7 years in the part of Sichuan, which borders on Yunnan and Guizhou, were analyzed to find out the weakness , summarize the lessons and experiences, and provide scientific evidence for the policy-making of the next intervention.Method: Collect 2000-2006 work data of eradicating poliomyelitis in the areas boundering on Yunnan and Guizhou, and analyze those data by "China immunity programming surveillance information manage system" and spss11.0 software.Result:: From 2000 to 2006, 20 counties, reported AFP 216 cases totally. Male to female ratio was 1.67:1, and without obvious difference among counties and seasons. Age distributing was balanced, without clustering cases, and migrant children were few (7 cases). County level reports were in the majority among AFP cases reports, accounting for 49.7%. There were just 32.87% cases can be found out and reported at the first care-seeking. There were 43.06% cases were reported, which were diagnosed at the first time. There wre 62.96% of 216 AFP cases taking full-course vaccine, among which "zero dose vaccined" children were 6.48%. According to the results of the lab tests, 12 cases were polio virus-positive, among which 7 cases were type II, accounting for 58.33%. And all of the 216 cases were evidenced negative, according to diagnose of provincial AFP professor subcommittee. From 2000 to 2006, the AFP monitoring system's sensitivity and betimes in the areas were not fit the requests of WHO and the Ministry of Health. The 5 counties in Sichuan, bordering on Yunnan and Guizhou had intensified immunization program for poliomyelitis during 2002-2007. The first round inoculation rate in resident children was 96.92%, and the same rate in migrant children was 97.45%; the second round inoculation rate in resident children was 94.93%, and the same rate in migrant children was96.06%. And there were 84975 "zero dose vaccined" resident children and 17618 "zero dose vaccined" migrant children. The training of the 71 career men taking charge of AFP surveillance, had got marked effect. The average score of examination elevated from 52.6 to 93 after the training.Conclusion: The low professional ability of county or below level career men leaded AFP cases diagnose mistakes and missing, which brought big hidden troubles to the eradication of poliomyelitis. The integrality of AFP surveillance had advanced, but sensitivity and betimes still can not fit the requests of WHO and the Ministry of Health. The surveillance quality had declined. Many "zero take" children were inoculated by several rounds of intensified immunization program, through which immune blanks can be filled up, immune barriers established, wild strain insulated, and VDPV controlled. And special training course is necessary for advancing career men's ability.