Dynamic disease manifestations among individuals infected with SARS-CoV-2 Omicron variant

To the Editor:The unprecedented pandemic of coronavirus disease 2019(COVID-19)has put tremendous pressure on healthcare resources and economic development worldwide.Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)Omicron strain has become the dominant causative strain of COVID-19 in most countries since the end of 2021.Although a large cohort study comparing the symptomatic presentation of SARSCoV-2 Omicron and Delta infection has been made in the UK,[1]features and evolution of symptoms of individuals infected with Omicron are rarely reported in other countries or regions,especially among Asian individuals.