Shots - Health News Shots - Health News Health News From NPR

Closing loopholes in background checks for gun purchases would reduce the risk of death and injury, doctors' and attorneys' groups say. Alexa Miller/Getty Images hide caption

itoggle caption Alexa Miller/Getty Images

An overgrowth of Clostridium difficile bacteria can inflame the colon with a life-threatening infection. Dr. David Phillips/Getty Images/Visuals Unlimited hide caption

itoggle caption Dr. David Phillips/Getty Images/Visuals Unlimited

One form of carbapenem-resistant bacteria seen in culture. CRE bacteria are blamed for 600 deaths a year in the U.S. and can withstand treatment by virtually every kind of antibiotic. CDC hide caption

itoggle caption CDC

Measles is highly contagious, and it produces fever and rash in susceptible people who become infected. Hazel Appleton/Health Protection Agency Centre/Science Source hide caption

itoggle caption Hazel Appleton/Health Protection Agency Centre/Science Source

People who practice free-range parenting say it makes kids more independent, but others see it as neglect. State and local laws don't specify what children are allowed to do on their own. iStockphoto hide caption

itoggle caption iStockphoto

Sara Martín reads bedtime stories with her children. When the kids were younger, she says, staying up to date on their frequent immunizations was tough, because of cost and transportation issues. Lauren M. Whaley/CHCF Center for Health Reporting hide caption

itoggle caption Lauren M. Whaley/CHCF Center for Health Reporting

The Pseudomonas stutzeri bacterium, commonly found in soil, was the most prevalent subway microbe. Lower Manhattan was its prime hangout. Mason/Cell Systems 2015 hide caption

itoggle caption Mason/Cell Systems 2015

Dr. Margaret Hamburg will have served almost six years as FDA commissioner by the time she leaves, far longer than the recent tenure for chiefs of the agency. J. David Ake/AP hide caption

itoggle caption J. David Ake/AP

Leah Russin, of Palo Alto, Calif., holds her son, Leo, 16 months, as she speaks Wednesday at a news conference in support of proposed state legislation that would require parents to vaccinate all school children. Rich Pedroncelli/AP hide caption

itoggle caption Rich Pedroncelli/AP

California is one of 20 states that allow parents to opt out of vaccination requirements for reasons of "personal belief." About 10 percent of students in the Santa Monica-Malibu school district are not immunized. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

Dr. Eric Ball examines a healthy 5-day-old patient in his office in Ladera Ranch, Calif. Ball and colleagues decided this week to take only patients whose parents follow the recommended vaccine schedule. Courtesy of Eric Ball hide caption

itoggle caption Courtesy of Eric Ball