137 - Dr. Crystal Watson Returns to Answer Your COVID-19 Questions

Why isn't the potential of contact tracing being realized right now in the US? Can an MMR booster protect me from COVID-19? Is it better to go to the grocery store several times a week or make one longer trip? Will social distancing and masks make for a lighter flu season? Can a COVID test become negative if it sits too long before processing? Should I shave my beard?

Dr. Crystal Watson from the Center for Health Security and Dr. Josh Sharfstein address your questions submitted to publichealthquestion@jhu.edu