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Volume 30, Number 7—July 2024
Research

Prevalence of and Risk Factors for Post–COVID-19 Condition during Omicron BA.5–Dominant Wave, Japan

Arisa IbaComments to Author , Mariko Hosozawa, Miyuki Hori, Yoko Muto, Isao Muraki, Rie Masuda, Nanako Tamiya, and Hiroyasu Iso
Author affiliations: National Center for Global Health and Medicine, Tokyo, Japan (A. Iba, M. Hosozawa, M. Hori, Y. Muto, H. Iso); Osaka University, Osaka, Japan (I. Muraki); University of Tsukuba, Ibaraki, Japan (R. Masuda, N. Tamiya)

Main Article

Figure 1

Flowchart of participant selection in study of prevalence and risk factors for post–COVID-19 condition during Omicron BA.5–dominant wave, Japan. Of 29,276 residents 20–69 years of age identified in the municipal HER-SYS database as infected with COVID-19, we selected a total of 25,911 participants; we extracted the same number of age- and sex-matched noninfected residents from the Basic Residence Registration System to serve as the control group. HER-SYS, Health Center Real-time Information-sharing System on COVID-19.

Figure 1. Flowchart of participant selection in study of prevalence and risk factors for post–COVID-19 condition during Omicron BA.5–dominant wave, Japan. Of 29,276 residents 20–69 years of age identified in the municipal HER-SYS database as infected with COVID-19, we selected a total of 25,911 participants; we extracted the same number of age- and sex-matched noninfected residents from the Basic Residence Registration System to serve as the control group. HER-SYS, Health Center Real-time Information-sharing System on COVID-19.

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Page created: June 05, 2024
Page updated: June 22, 2024
Page reviewed: June 22, 2024
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