Since the September 26th ceremony at the White House’s Rose Garden, at least 15 people have tested positive for Covid-19, leading some to declare this is a possible super spreader event. But what does that mean? CNN Chief Medical Correspondent Dr. Sanjay Gupta talks with CNN Medical Analyst Erin Bromage about what we can learn from this potentially dangerous event.To learn more about how CNN protects listener privacy, visit cnn.com/privacy