# Achieving herd immunity against COVID-19 at the country level by the exit strategy of a phased lift of control

> Research article (Scientific Reports, 2021) · cited 35× · AI/ML

**Wikidata**: [openalex:W3133379342](https://www.wikidata.org/wiki/openalex:W3133379342)  
**Source**: https://4ort.xyz/entity/achieving-herd-immunity-against-covid-19-at-the-country-level-by-the-exit-strategy-of-a-phased-lift-of-control