Updated guidance provides further protection for U.S. blood supply

No Olympics-Linked Zika Cases: WHO Mylan Won't Lower EpiPen Price No Hospital Bills for Pulse Nightclub Shooting Survivors Researchers Jump-Start Coma Patient's Brain Historic Face Transplant Transforms Firefighter's Life Spiked Heroin Suspected in Rash of Overdoses in Indiana and Ohio

Infants with a particular gene variant appear more vulnerable after infection

Improvement seen in all age levels, but millions still struggle with the cost of prescription drugs

When patients ask about safety and using e-cigarettes to stop smoking, doctors' advice differs

Extra chemo drugs failed to change course of osteosarcoma, researchers say

Sedentary seniors more likely to suffer mental decline, study finds

Practices that can help prevent illness

Suggestions to keep their feet happy

Study found that only about a fifth of 12th graders who used an e-cigarette used a nicotine substance