Sakamoto, Naoya, Masayuki Ota, Tomoko Takeda, Atsushi Kosaka, Takuya Washino, Sentaro Iwabuchi, Minako Beppu, Itaru Nishiduka, Tamano Matsui, Motoi Suzuki, and Fukumi Nakamura-Uchiyama. 2022. “Nosocomial Outbreak of Coronavirus Disease in Two General Wards During the Initial Wave of the Pandemic in 2020, Tokyo, Japan”. Western Pacific Surveillance and Response 13 (1):5. https://doi.org/10.5365/wpsar.2022.13.1.906.