Brianne Barker

Brianne Barker explains what's known about newly discovered COVID variants and omicron sub-variants and puts data about vaccine effectiveness in context.

Dr. Brianne Barker discusses what current data tells us about omicron, and what is still unknown. 

We talk about the science behind the booster shot decision, whether vaccinated people should be worried about waning immunity against the delta variant and more.

With news that 12-15 year-olds will soon be eligible for vaccines -- your vaccine science questions answered here.