Vishal Gupta, MD, PhD trained as a medical resident in the department of internal medicine at Columbia University College of Physicians and Surgeons, New York City. He also performed fellowships at Columbia University in Gastroenterology and Harvard Medical School in Gerontology and earned a PhD in colon cancer at the University of South Carolina.

Washing your hands is the best and easiest way to help you stay well and prevent the spread of germs that can cause colds and flu.