Characteristics of hospitalized patients with COVID-19 during the first to fifth waves of infection: a report from the Japan COVID-19 Task Force.
Ho LeeShotaro ChubachiHo NamkoongTakanori AsakuraHiromu TanakaShiro OtakeKensuke NakagawaraAtsuho MoritaTakahiro FukushimaMayuko WataseTatsuya KusumotoKatsunori MasakiHirofumi KamataMakoto IshiiNaoki HasegawaNorihiro HaradaTetsuya UedaSoichiro UedaTakashi IshiguroKen ArimuraFukuki SaitoTakashi YoshiyamaYasushi NakanoYoshikazu MutohYusuke SuzukiKoji MurakamiYukinori OkadaRyuji KoikeYuko KitagawaAkinori KimuraSeiya ImotoSatoru MiyanoSeishi OgawaTakanori KanaiKoichi Fukunaganull nullPublished in: BMC infectious diseases (2022)
We identified differences in clinical characteristics of hospitalized patients with COVID-19 in each COVID-19 wave up to the fifth COVID-19 wave in Japan. The fifth COVID-19 wave was associated with greater disease severity on admission, the third COVID-19 wave had the highest mortality rate, and the first COVID-19 wave had the highest percentage of patients requiring mechanical ventilation.