> you need to have had the virus to become naturally immune According to oft cited data early on, many people were naturally resistant (perhaps not immune) fro

> you need to have had the virus to become naturally immune According to oft cited data early on, many people were naturally resistant (perhaps not immune) from similarly packaged (viral envelope) coronaviruses with less dangerous infections, including a 2019-2020 season variant of the common cold. I don't see those articles anymore. It was also supported by data (and cited by clinicians including at the Mayo Clinic) that folks with current MMR vaccinations and the tuberculosis vaccination given in India tended to test as resistant. Anyway, just data points from real medical data at a research institute of international reknown not cited...