Effects of COVID-19 vaccination and previous SARS-CoV-2 infection on omicron infection and severe outcomes in children under 12 years of age in the USA: an observational cohort study

https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(23)00272-4/fulltext?dgcid=hubspot_email_covidalerts&utm_campaign=covidalerts&utm_medium=email&_hsmi=263719363&_hsenc=p2ANqtz-8qPSsysRwqgq4TcZmF3Q3bYYfua3GmZgFp3MU45_XPaNve4dCK_1rGTb-IJlKS8PbQERUfd32GaXGuFhRw_Ey9k7LXZA&utm_content=263697128&utm_source=hs_email