1. Global percentage of asymptomatic SARS-CoV-2 infections among the tested population and individuals with confirmed COVID-19 diagnosis: a systematic review and meta-analysis;Ma;JAMA Netw Open,2021
2. High rate of asymptomatic carriage associated with variant strain Omicron;Garrett;MedRxiv,2022
3. Early estimates of SARS-CoV-2 Omicron variant severity based on a matched cohort study, Ontario Canada;Ulloa;MedRxiv,2022
4. Characteristics and outcomes of hospitalizaed patients in South Africa during the COVID-19 Omicron wave compared with previous waves;Maslo;JAMA,2021
5. China battles Omicron outbreak weeks before Winter Olympics;Davidson;The Guardian,2022