We Still Don’t Know How Well Covid Vaccines Stop Transmission

February 25, 2021

(Wired) – Achieving that is likely to take a few more months—provided vaccine makers don’t hit any production snags and worrisome variants don’t derail current progress. In the interim, an increasing number of people will find themselves in a liminal state, navigating what it means to be a vaccinated person moving through an unvaccinated world. What are its rules, and what will it take to be a good citizen of it? Answering those questions means confronting an even more fundamental unknown. A vaccinated person may be well-protected from the worst ravages of Covid-19. But it’s not clear if they can still carry the coronavirus and transmit it to susceptible people around them.