Because the Delta variant ravages the Southeast and threatens equally dire outcomes in broad swaths of the nation, companies, authorities our bodies, well being teams, and faculties have begun mandating employees prove they are vaccinated against COVID-19. Office vaccination mandates are a legal, ethical and necessary means to extend population-level immunity and safety towards an infection.
However such mandates beg the query: What about individuals who already had the coronavirus? Earlier than vaccines for COVID-19 had been accessible, many scientists suspected that prior an infection protected towards re-infection, as proven in experiments in animals or from research of human outbreaks.
Extra lately, a not-yet-peer-reviewed study conducted this year among 52,238 employees of the Cleveland Clinic Well being System in Ohio discovered that of 1,359 unvaccinated individuals, zero previously-infected workers developed COVID-19. In the meantime, amongst these unvaccinated with out prior SARS-CoV-2 an infection, there was a gentle charge of recent an infection.