Today we're looking at how common COVID-19 re-infection are.

To answer your questions, KCBS Radio news anchors Melissa Culross and Jason Brooks spoke with Dr. Juliet Pulliam, director of the center of Excellence in Epidemiological Modelling and Analysis at Stellenbosch University in South Africa.

If you have a question you would like answered on a future episode of Ask An Expert, please email us at: AskUs@KCBSRadio.com.