In the USA and Germany, high-level officials have used the term pandemic of the unvaccinated, suggesting that people who have been vaccinated are not relevant in the epidemiology of COVID-19. Officials’ use of this phrase might have encouraged one scientist to claim that “the unvaccinated threaten the vaccinated for COVID-19”.
But this view is far too simple.There is increasing evidence that vaccinated individuals continue to have a relevant role in transmission.
In Massachusetts, US...
