关键词: 丝虫病, 横向监测, 纵向监测

Abstract: Objective To investigate and supervise the prevalence of filariasis after its elimination in Shangdong province. Methods From 1984 to 2002,Cross-sectional survey: survey of activity of permanent residents and mobile population,of mosquito vectors,of serum in human population,and of terminal patients were carried out. Longitudinal survey: according to different sites and the former incidence in these areas with the prevalence of filariasis,5 towns and 5 countries and 18 administrative villages were chosen to be under a fixed surveillance. Results Cross-sectional survey,502 towns and 1 345 villages were surveyed in 74 counties across the province,30 microfilarial positives cases of 954 467 people were found,and the positive rate is 0.003%; During the survey of vectors,378 816 Culex pipiens were dissected,161 positive mosquitoes were detected,the infection rate is 0.04%; In the survey of serology,10 667 cases were tested by indirect immunofluorescence assay(IFA),those with positive filarial antibody were 148,the positive rate was 1.39%,which was quite near to the level of that in non-prevalent areas; In the survey of mobile population,36 559 people were tested in 4 473 villages of 355 towns of 45 county,147 microfilarial positives were detected and the infection rate was 0.40%. The longitudinal survey showed that 59 microfilarial positives are detected in total,and all turn negative automatically within 3-6 years. The average infection rate of mosquitoes was 0.04%,and reduced year by year. 3 066 cases were tested by IFA,and with the positives 108,the average positive rate is 3.52%. Conclusion The results showed that all the indexes related to filariasis have come to the criterion of the elimination of filariasis issued by the ministry of health.