Age-Stratified Seroprevalence of SARS-CoV-2 Antibodies before and during the Vaccination Era, Japan, February 2020–March 2022

• Published in: Emerging infectious diseases Vol. 28; no. 11; pp. 2198 - 2205
• Main Authors: Yamayoshi, Seiya, Iwatsuki-Horimoto, Kiyoko, Okuda, Moe, Ujie, Michiko, Yasuhara, Atsuhiro, Murakami, Jurika, Duong, Calvin, Hamabata, Taiki, Ito, Mutsumi, Chiba, Shiho, Kobayashi, Ryo, Takahashi, Satoshi, Mitamura, Keiko, Hagihara, Masao, Shibata, Akimichi, Uwamino, Yoshifumi, Hasegawa, Naoki, Ebina, Toshiaki, Izumi, Akihiko, Kato, Hideaki, Nakajima, Hideaki, Sugaya, Norio, Seki, Yuki, Iqbal, Asef, Kamimaki, Isamu, Yamazaki, Masahiko, Kawaoka, Yoshihiro, Furuse, Yuki
• Format: Journal Article
• Language: English
• Published: United States U.S. National Center for Infectious Diseases 01.11.2022; Centers for Disease Control and Prevention
• Subjects: Age factors in disease; Age groups; Aged; Analysis; Antibodies; Antibodies, Viral; Antigens; Child; coronavirus disease; Coronaviruses; COVID-19; COVID-19 - epidemiology; COVID-19 - prevention & control; COVID-19 vaccines; Health facilities; Hospitals; Humans; Infections; Japan - epidemiology; Laboratories; Methods; Metropolitan areas; Pandemics; Population; Prevalence studies (Epidemiology); Proteins; respiratory infections; SARS-CoV-2; Seroepidemiologic Studies; Serology; Severe acute respiratory syndrome coronavirus 2; Vaccination; Viral infections; viruses; Japan; viruses; antibody; Japan; seroprevalence; zoonoses; respiratory infections; COVID-19; epidemiology; SARS-CoV-2; vaccine; severe acute respiratory syndrome coronavirus 2; coronavirus disease; vaccine-preventable diseases; incidence

Japan has reported a relatively small number of COVID-19 cases. Because not all infected persons receive diagnostic tests for COVID-19, the reported number must be lower than the actual number of infections. We assessed SARS-CoV-2 seroprevalence by analyzing >60,000 samples collected in Japan (To...