Kai Hong, Megan C. Lindley, Yuping Tsai, and Fangjun Zhou are with the Immunization Service Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA. Note. The findings and conclusions in this article are those of the authors and do not necessarily represent the views of the Centers for Disease Control and Prevention.
Am J Public Health. 2022 May;112(5):719-723. doi: 10.2105/AJPH.2022.306765. Epub 2022 Mar 24.
New York City (NYC) introduced a universal prekindergarten program in 2014 that mandated influenza vaccination for enrollment. We conducted a difference-in-difference-in-differences study to evaluate the program using 2012 to 2019 MarketScan claims data. After the introduction of the program, influenza vaccine uptake among four-year-old children in NYC during the subsequent seasons increased by 6.3 to 9.8 percentage points compared with the rest of New York State. (. 2022;112(5):719-723. https://doi.org/10.2105/AJPH.2022.306765).
纽约市（NYC）于 2014 年推出了一项普及学前教育计划，规定入学必须接种流感疫苗。我们使用 2012 年至 2019 年 MarketScan 理赔数据，采用双重差分法研究该计划。该计划推出后，纽约市随后各季节 4 岁儿童的流感疫苗接种率比纽约州其他地区增加了 6.3 至 9.8 个百分点。（. 2022;112(5):719-723. https://doi.org/10.2105/AJPH.2022.306765）。
