Who is more at risk of the COVID-19 Omicron variant? Vaccinated or unvaccinated?

This is an important immunology question for which we can only speculate as very little is known about the new COVID-19 variant. It seems to be more infectious but less virulent, similar to what we thought about the Delta variant earlier in the year.

If a person's immune system is primed to make antibodies against the SARS-COV2 original spike protein tha…