. Author manuscript; available in PMC: 2024 Feb 18.
Published in final edited form as: Vaccine. 2021 Aug 22;40(Suppl 1):A17–A25. doi: 10.1016/j.vaccine.2021.07.024
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).