Presentation Information
[P-27]COVID-19パンデミック前後における高齢者インフルエンザワクチン接種プログラムの周辺因果効果推定値の方向逆転：連結行政データを用いた住民ベースのコホート研究
*Ayu Kasamatsu1,6, Daisuke Yoneoka6, Yuichiro Yahata2,3, Tanaka Kaori7, Hajime Kamiya1,4, Wakaba Fukushima5 (1. Center for Infectious Disease Epidemiology, National Institute of Infectious Diseases, Japan Institute for Health Security, 2. Center for Public Health Action in Applied Epidemiology, National Institute of Infectious Diseases, Japan Institute for Health Security, 3. Department of Environmental Health, National Institute for Public Health, 4. Department of Public Health, Occupational Medicine, and Applied Epidemiology, Graduate School of Medicine, Mie University, 5. Department of Public Health, Graduate School of Medicine, Osaka Metropolitan University, 6. Department of Epidemiology, National Institute of Infectious Diseases, Japan Institute for Health Security, 7. Department of Immunization Research, National Institute of Infectious Diseases, Japan Institute for Health Security)