SARS-CoV-2 infection risk among vaccinated and unvaccinated household members during the Alpha variant surge - Denver, Colorado, and San Diego, California, January-April 2021. - McCormick DW; Konkle SL; Magleby R; Chakrabarti AK; Cherney B; Lindell K; Namageyo-Funa A; Visser S; Soto RA; Donnelly MAP; Stringer G; Austin B; et al. (Vaccine, 2022)