First and second COVID-19 waves in Japan: A comparison of disease severity and characteristics

Affiliations

• ¹ Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan. Electronic address: ssaito@hosp.ncgm.go.jp.
• ² AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan.
• ³ Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan; AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan.
• ⁴ Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan; Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan.
• ⁵ Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan.
• ⁶ AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan; Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.