Severe Acute Respiratory Syndrome Coronavirus 2 Infection among Returnees to Japan from Wuhan, China, 2020

• DOI: 10.3201/eid2607.200994
• Publication Date: 2020-04-10T18:13:56Z
• Authors: Yuzo Arima; Satoshi Kutsuna; Tomoe Shimada; Motoi Suzuki; Tadaki Suzuki; Yusuke Kobayashi; Yuuki Tsuchihashi; Haruna Nakamura; Kaoru Matsumoto; Asuka Takeda; Keisuke Kadokura; Tetsuro Sato; Yuichiro Yahata; Noriko Nakajima; Minoru Tobiume; Ikuyo Takayama; Tsutomu Kageyama; Shinji Saito; Naganori Nao; Tamano Matsui; Tomimasa Sunagawa; Hideki Hasegawa; Kayoko Hayakawa; Shinya Tsuzuki; Yusuke Asai; Tetsuya Suzuki; Satoshi Ide; Keiji Nakamura; Yuki Moriyama; Noriko Kinoshita; Yutaro Akiyama; Yusuke Miyazato; Hidetoshi Nomoto; Takato Nakamoto; Masayuki Ota; Sho Saito; Masahiro Ishikane; Shinichiro Morioka; Kei Yamamoto; Mugen Ujiie; Mari Terada; Haruhito Sugiyama; Norihiro Kokudo; Norio Ohmagari; Makoto Ohnishi; Takaji Wakita
• Keywords: Adult; Male; China; bias; prevalence; Pneumonia, Viral; Infectious and parasitic diseases; RC109-216; Polymerase Chain Reaction; Betacoronavirus; 03 medical and health sciences; 0302 clinical medicine; Japan; pneumonia; Humans; Pandemics; Aged; Travel; SARS-CoV-2; quarantine; R; Dispatch; COVID-19; Middle Aged; Asymptomatic infections; 3. Good health; Medicine; Female; Coronavirus Infections

In early 2020, Japan repatriated 566 nationals from China. Universal laboratory testing and 14-day monitoring of returnees detected 12 cases of severe acute respiratory syndrome coronavirus 2 infection; initial screening results were negative for 5. Common outcomes were remaining asymptomatic (n = 4) and pneumonia (n = 6). Overall, screening performed poorly.