Nearly all the patients affected by an ongoing chickenpox outbreak in New York City are unvaccinated, according to a report published Thursday. The outbreak was first identified by city health ...

WASHINGTON -- The odds of children becoming infected with chickenpox have decreased since universal vaccination was recommended in the U.S., with deaths also decreasing, researchers said here. Within ...

Montana Department of Public Health and Human Services officials are seeing an increase in the number of cases of chickenpox reported in school-aged children across the state. There has been a 200% ...

HELENA, Mont. — State health officials are warning Montanans about a spike in chickenpox cases in young children. The Department of Public Health and Human Services is seeing a 200% increase in cases ...

WASHINGTON, DC — In the 25 years since the United States first launched its universal vaccinations program to protect children against chickenpox (varicella), the program has seen dramatic results, a ...