Flu cases are surging across the nation, closing nearly a dozen schools and swamping hospitals in some states. At least 24 million cases, 310,000 hospitalizations and 13,000 deaths — 57 of them ...

New research by Mount Sinai’s School of Medicine shows children may be able to develop a tolerance to mild peanut allergies by increasing small amounts of peanut butter over time. NBC News’ Rehema ...