. 2022 Mar 30;43(2):311–319. doi: 10.1057/s41271-022-00347-9
© This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply 2022
This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.
Fig. 1.
A continuum of vaccine encouragement strategies