Dr. Todd Ellerin, director of infectious diseases at South Shore Health, talks about when children under 5 may be eligible for a COVID-19 vaccine.
Dr. Todd Ellerin, director of infectious diseases at South Shore Health, talks about when children under 5 may be eligible for a COVID-19 vaccine.
Dr. Helen Boucher -- interim Dean of Tufts University School of Medicine and an infectious disease specialist at Tufts Medical..