A COVID mystery: Some people never get sick even after being exposed to the virus
A big mystery of the COVID-19 pandemic that researchers are baffled by is that some people are exposed to the virus but never get sick even as others are diagnosed with it multiple times, despite being vaccinated. Researchers say figuring out why that happens is an important question, and they're working to find the answer. Dr. Michael Gale, professor of global health, was quoted.