PLoS Medicine
http://www.plosmedicine.org/
(Accessed 11 Dec 2021)

Perspective
SARS-CoV-2 vaccine boosters: The time to act is now
Maya Petersen, Joshua Schwab, Diane V. Havlir
| published 09 Dec 2021 PLOS Medicine
https://doi.org/10.1371/journal.pmed.1003882