Analysis of Measles Epidemiological Characteristics and Evaluation on Working Status of Measles Surveillance System in Pingdingshan City of Henan Province in 1999～2001

For understanding the measles epidemiological characteristics in Pingdingshan city of Henan Province in 1999～2001,the working status of measles surveillance system and the case report by the system were analyzed.In 3 years,a total of 354 cases were reported,of them 160 measles cases were clinically diagnosed,88 were latoratory identified and 106 were excluded by laboratory test.The cases distributed in 11 counties(city,district) and were in the forms of highly sporadic and locally burst up.19 measles outbreaks occurred in 1999～2001,of which 14 were in 2001 accounting for 73.68% of the total measles outbreaks.174 cases were involed in 19 outbreaks that was about 70.16% the total measles cases.Disease was found all around the year but mostly appeared in March～July.The age of the measles cases was 4 months old as the youngest and 46 years old as the oldest,most focused in primary and junior middle school students of 6～15 years old.41.52% cases had definite measles vaccination history,while that of 46.05% cases was not clear.Through investigation,42 measles cases had not been reported,the failed reporting rate was 38.18%.According to the regional distribution and the immune history of the measles cases,it showed the main point in routine imunization is to vaccinate measles vaccine timely,also should pay great attention to measles revaccination of children of 1.5-2 and 7 years old.These may build up a high immune level in population to prevent measles outbreak.