William Morice II, M.D., Ph.D., chair of the Department of Laboratory Medicine and Pathology at Mayo Clinic and president of Mayo Clinic Laboratories, joins "Answers From the Lab" for his weekly leadership update with podcast host Bobbi Pritt, M.D. In this episode, Dr. Pritt and Dr. Morice discuss the science behind the increasing COVID-19 infections, why individuals can get reinfected with different variants, and the effectiveness of the at-home antigen tests.