Trends in the incidence of symptomatic COVID-19 during the first endemic wave in the Japanese population

Object: First coronavirus disease 2019 (COVED-19) endemic wave in Japan was almost stabilized in late May in 2020, without strong physical distancing interventions. Our objective was to analyze temporal trends in the incidence of symptomatic COVID-19 during this phase in Osaka Prefecture (population of 8.8 million).