COVID-19 Vaccines May Not Prevent Nasal SARS-CoV-2 Infection and Asymptomatic Transmission - Benjamin S. Bleier, Murugappan Ramanathan, Andrew P. Lane, 2021
https://journals.sagepub.com/doi/10.1177/0194599820982633
Meanwhile we're about to start vaccinating 5 year olds to protect the elderly