This is a summary, written by members of the CITF Secretariat, of:

Bolotin S, Wilson S, Murti M. Achieving and sustaining herd immunity to SARS-CoV-2. CMAJ Jul 2021, 193 (28) E1089; DOI: 10.1503/cmaj.210892

The results and/or conclusions contained in the research do not necessarily reflect the views of all CITF members.

In this brief communication by CITF-funded researcher Dr Shelly Bolotin and colleagues, five key elements to achieve and maintain herd immunity Herd immunity is reached when a large proportion of the population is immune to a specific disease, reducing the spread of the disease from person to person. are presented. The authors define herd immunity and present concise information on barriers and drivers in our ability to reach this protection at the community-level. Authors discuss the importance of vaccination and the threat that variants of concern pose in achieving herd immunity.