Vaccines Are Pushing Pathogens to Evolve

"Editor’s note, added Dec. 6, 2021: This article from 2018 discusses how leaky vaccines — vaccines that do not reduce viral replication or transmission to others — can drive the pathogens they target to evolve and become more virulent. These concerns do not apply to COVID-19 vaccines, because COVID-19 vaccines significantly reduce coronavirus replication and transmission, reducing the chance that mutations occur and variants arise. The more people who are vaccinated against COVID-19, the less likely it is that dangerous variants will evolve."