Kobayashi, M., K. Kakimoto, Y. Yahata, Y. Kobayashi, H. Nagai, C. Tanikake, K. Fukumura, K. Date, H. Murata, S. Kitagawa, Y. Yoshida, Y. Kamoda, M. Akazaki, M. Tanabe, C. Shirai, T. Shimada, T. Kamigaki, T. Sekizuka, M. Kuroda, and T. Sunagawa. “Enhanced Case Finding and Self-Isolation Measures in the Early Phase of SARS-CoV-2 Omicron Transmission, Osaka, Japan, December 2021–January 2022”. Western Pacific Surveillance and Response, vol. 16, no. 2, Apr. 2025, doi:10.5365/wpsar.2025.16.2.1139.