论文部分内容阅读
１９９３年以来，我国在冬春季连续开展了４次８轮的全国强化免疫活动，据可供分析数据统计，全国４岁以下儿童累积接种５２亿人次，有效地提高了人群免疫水平。我国第４次局部范围的强化免疫活动（ＳＮＩＤｓ）分别有２６８２（第１轮）和２６５９（第２轮）个县（区、市、旗，下同）开展了强化免疫活动，分别占全国县数的９４５％和９３７％。据部分开展全省范围强化免疫省份的免疫儿童队列分析，每年强化免疫均有一定比例的漏种儿童，各出生队列的漏种率随年龄的增加而减少，同一出生队列脱漏率随经历强化免疫次数的增加而下降。因此，持续开展强化免疫活动可不断提高漏种儿童的免疫机会，降低脱漏率。
Since 1993, China has continuously carried out 8 rounds of 8 rounds of national intensive immunization activities in winter and spring. According to statistics available for analysis, 520 million children have been vaccinated cumulatively by children under 4 years of age in China, effectively raising the level of population immunity. In the fourth SNIDs, 2682 (first rounds) and 2659 (second rounds) counties (districts, cities, banners and the same below) conducted intensified immunization activities respectively, covering the whole country counties The number of 94 5% and 93 7%. According to the analysis of some cohorts of immunized children in provincewide intensive immunization provinces, there is a certain percentage of missed children in intensive immunization each year. The leakage rate of each birth cohort decreases with age, and the same birth cohort leakage rate with experience of intensive immunization The increase in the number of decline. Therefore, the continuous implementation of intensive immunization activities can continuously improve the immunization opportunities of children who have missed the pregnancy and reduce the rate of the leakage.