Dr. Mehmet Oz of “The Dr. Oz Show” tells TODAY that there are proactive steps you can take against the coronavirus, such as boosting your immune system with fruits and vegetables, vitamin D3 and a flu shot. He says to…

NBC News medical contributor Dr. Natalie Azar joins the 3rd hour of TODAY to answer questions about the coronavirus. She talks about how to handle large gatherings, whether you can still go to the gym, government advice for travel and…