Even people who recovered from COVID-19 should get vaccinated. Evidence suggests that antibodies from natural infection may not be as robust or long-lasting as those from vaccination. Studies also suggest vaccination may offer better protection against new variants than those from a natural infection. Undergraduate students living in campus residence halls are required to test for COVID-19 if UHS does not have proof of vaccination. Previous infection does not meet this requirement. Students should ensure they submit proof of vaccination to UHS or authorize UHS to access their immunization record.