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. 2022 Mar 30:1–7. doi: 10.1017/ice.2022.50

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© The Author(s) 2022

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means subject to acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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Fig. 1. — Cumulative incidence of COVID-19 infection (by RT-PCR) among vaccinated (2 doses of CoronaVac vaccine, and 2 doses of ChAdOx1 [Oxford-AstraZeneca] vaccine) and unvaccinated healthcare workers.