SAN FRANCISCO, Calif. (KRON) – It’s a pandemic of the unvaccinated. That’s how the CDC is classifying our current COVID-19 situation across the country.

As vaccination rates wane and case numbers have begun rising, the suggestion for everyone to put our masks back on is becoming more and more common.

What’s the risk for vaccinated people, specifically when it comes to this new delta variant?

Infectious disease expert from Stanford University Dr. Dean Winslow explains.