MMWR Morb Mortal Wkly Rep. 2020 May 22;69(20):630-631. doi: 10.15585/mmwr.mm6920e1.
On March 13, 2020, the United States declared a national state of emergency to control the pandemic spread of SARS-CoV-2, the virus that causes coronavirus disease 2019 (COVID-19) (1). Public health response measures to mitigate the pandemic have centered on social distancing and quarantine policies, including shelter-in-place and stay-at-home orders. Michigan implemented a stay-at-home order on March 23, 2020, to facilitate social distancing (2). Such strategies might result in decreased accessibility to routine immunization services, leaving children at risk for vaccine-preventable diseases and their complications (3). To evaluate whether vaccination coverage has changed during the pandemic, data from the Michigan Care Improvement Registry (the state's immunization information system) (MCIR) were analyzed. Changes in vaccine doses administered to children and the effects of those changes on up-to-date status were examined for vaccinations recommended at milestone ages corresponding to the end of an Advisory Committee on Immunization Practices (ACIP) recommendation period for one or more vaccines (4).
2020 年 3 月 13 日，美国宣布进入全国紧急状态，以控制导致 2019 年冠状病毒病（COVID-19）的 SARS-CoV-2 病毒的流行传播（1）。减轻大流行的公共卫生应对措施集中在社会隔离和检疫政策上，包括就地避难所和居家令（2）。密歇根州于 2020 年 3 月 23 日实施了居家令，以促进社会隔离（2）。这些策略可能会导致常规免疫服务的可及性降低，使儿童面临疫苗可预防疾病及其并发症的风险（3）。为了评估大流行期间疫苗接种覆盖率是否发生了变化，分析了密歇根州医疗改善登记处（该州的免疫信息系统）（MCIR）的数据（4）。对在里程碑年龄接种的疫苗剂量进行了检查，并检查了这些变化对一个或多个疫苗的建议期结束时（ACIP）推荐的相应里程碑年龄的疫苗接种最新状态的影响（4）。
