Piper Su, seen here with her son, Elliot, lives in Alexandria, Va. She has registered with several transplant centers in hopes of increasing the odds of getting an organ.
Courtesy of Piper Su
Sens. John McCain, R-Ariz., and Susan Collins, R-Maine (seen in 2013), along with Sen. Rand Paul, R-Ky., have announced firm opposition to the latest GOP health care bill.
Brendan Smialowski/AFP/Getty Images
The American College of Obstetricians and Gynecologists calls the flu vaccine an "essential" part of prenatal care, for protection of the newborn as well as the woman. Infants typically don't get their own flu shot until age 6 months or later.
Katherine Streeter for NPR
Food allergies are tricky to diagnose, and many kids can outgrow them, too. A test called an oral food challenge is the gold standard to rule out an allergy. It's performed under medical supervision.
Michelle Kondrich for NPR