This year, the U.S. has confirmed 550 measles cases so far. A recent spike is connected to an outbreak in New York City and New York State, but there are outbreaks in four other states too.
It was Oregon's first pediatric case in more than 30 years. "It was difficult to take care of him, to watch him suffer," says Judith Guzman-Cottrill, an infectious-disease specialist.
Against the advice and pleas from doctors and medical associations, some Arizona lawmakers are pushing bills that would make it easier for parents to get exemptions for their kids from vaccinations.
For decades, scientists have observed an extraordinarily positive side effect among children who receive the measles vaccine. Researchers are now finding that other vaccines confer added protections.
A study of more than 600,000 Danish children finds no evidence of any link between autism and the vaccine that protects against mumps, measles and rubella.
Following several measles outbreaks this winter, there is a movement among some states to make it more difficult for people to claim nonmedical exemptions to vaccine laws.
Ethan Lindenberger had never received vaccines for diseases like polio or measles because his mom is anti-vaccine. Now he's 18, he's finally getting his shots.
A lot of vaccines and some medications need to be delivered by injection. Two groups of researchers are designing ways of delivering these medications by putting them in pill form.
As of Monday, public health authorities reported 36 cases, most affecting children under the age of 10. All but four of those with the highly contagious disease have not been vaccinated.