Vaccination coverage: MMR for two doses (5 years old) - WMCA

All children for whom the local authority is responsible who received two doses of MMR on or after their first birthday and at any time up to their fifth birthday as a percentage of all children whose fifth birthday falls within the time period.RationaleMMR is the combined vaccine that protects against measles, mumps and rubella. Measles, mumps and rubella are highly infectious, common conditions that can have serious complications, including meningitis, swelling of the brain (encephalitis) and deafness. They can also lead to complications in pregnancy that affect the unborn baby and can lead to miscarriage.Vaccination coverage is the best indicator of the level of protection a population will have against vaccine preventable communicable diseases. Coverage is closely correlated with levels of disease. Monitoring coverage identifies possible drops in immunity before levels of disease rise.The first MMR vaccine is given to children as part of the routine vaccination schedule, usually within a month of their first birthday. They'll then have a booster dose before starting school, which is usually between three and five years of age. Previous evidence shows that highlighting vaccination programmes encourages improvements in uptake levels.May also have relevance for NICE guidance PH21: Reducing differences in the uptake of immunisations (The guidance aims to increase immunisation uptake among those aged under 19 years from groups where uptake is low).Definition of numeratorTotal number of children whose fifth birthday falls within the time period who received two doses of MMR on or after their first birthday and at any time before their fifth birthday.Data for 2013 to 2014 are available at source at LA level. Data prior to 2013 to 2014 were collected at PCT level and converted to LA level using the criteria as described in the notes section below.Definition of denominatorTotal number of children whose fifth birthday falls within the time period.Data from 2013 and 2014 are available at source at LA level. Data prior to 2013 and 2014 were collected at PCT level and converted to LA level using the criteria as described in the notes section below.CaveatsFull GP postcodes are used to aggregate data to ICB. The GP-level coverage data is collected by NHS Digital Strategic Data Collection Service (SDCS) and published by the UK Health Security Agency (UKHSA) COVER team. ICB data is experimental data and should be treated with caution. It is not an official statistic.

针对所有由地方当局负责的儿童，计算在第一个生日至第五个生日之间至少接种两剂MMR疫苗的儿童比例，该比例以同期第五个生日范围内的所有儿童总数为基数。MMR疫苗为结合疫苗，可预防麻疹、流行性腮腺炎和风疹。麻疹、流行性腮腺炎和风疹均为高度传染性疾病，可能引发严重并发症，包括脑膜炎、脑肿胀（脑炎）和耳聋。这些疾病还可能影响孕妇，对未出生婴儿造成影响，并可能导致流产。疫苗接种覆盖率是衡量一个群体对疫苗可预防传染性疾病保护水平的最可靠指标。覆盖率与疾病水平密切相关。监测覆盖率有助于在疾病水平上升之前发现免疫力下降的可能。第一剂MMR疫苗通常在儿童一岁内作为常规疫苗接种计划的一部分接种。随后，在入学前，通常在3至5岁之间，他们将接种加强剂。先前的研究表明，突出疫苗接种计划可以促进接种率的提高。此数据可能对NICE指导方针PH21：减少免疫接种接受度差异（该指导方针旨在提高19岁以下低接受度群体中的免疫接种率）具有相关性。分子定义为：在指定时间范围内第五个生日范围内的儿童中，至少在第一个生日后及第五个生日前接种两剂MMR疫苗的总数。2013年至2014年的数据可在源头以地方当局（LA）级别获取。2013年至2014年之前的数据在初级卫生保健信托（PCT）级别收集，并按照以下备注部分所述的标准转换为LA级别。分母定义为：在指定时间范围内第五个生日范围内的儿童总数。2013年和2014年的数据可在源头以LA级别获取。2013年之前的数据在PCT级别收集，并按照以下备注部分所述的标准转换为LA级别。注意事项：使用完整的GP邮政编码将数据聚合到ICB。由英国卫生安全局（UKHSA）COVER团队收集的GP级别覆盖率数据由NHS数字战略数据收集服务（SDCS）发布。ICB数据为实验数据，应谨慎处理。它不是官方统计数据。