Covid-19 shots were administered in the U.K., an old ethical question in public health is gaining new relevance: Is there a case for issuing proof of immunity to people who have been inoculated?The idea is that individuals could stop wearing masks and following social-distancing rules if they can prove they have been inoculated and so aren’t a risk to others.
Restaurants, theaters and offices could reopen with confidence by admitting those certified as vaccinated, and international travel could resume.