"We tend to think about immunity as being immune or not immune. Our study cautions that we instead should be more focused on the risk of reinfection through time."
NSF s mission is to advance the progress of science, a mission accomplished by funding proposals for research and education made by scientists, engineers, and educators from across the country.
One study states that the unvaccinated can get reinfected, not withstanding any natural immunity gained from exposure to SARS-CoV-2. Some studies say that antibodies of exposed individuals can naturally evolve the immune cells.