Amid this change, however, one finds a Covid constant: public authorities have consistently promulgated health requirements that have been, and remain, contrary to medical and scientific knowledge. Imposing a vaccination requirement on noncitizen air travelers, but not citizens and other types of travelers, made zero sense. Moreover, it has long been clear that the vaccine’s primary utility is to protect the person vaccinated from severe disease—the guard against infection is limited and short-lived; thus, vaccine mandates could not be justified as protecting the public.

Public authorities also seemed intent on denying the existence of natural immunity resulting from earlier infections. In Djokovic’s case, he had already had Covid twice. It was common medical knowledge that natural immunity is generally as good as or better than vaccine immunity, though, in the case of Covid, the public health authorities tried to ignore this for years. By April 2022, even Anthony Fauci acknowledged that natural immunity was just as protective as vaccinations for Covid.

Today, the advice is even worse.