Measles cases are popping up across the United States, including an outbreak in Texas that has led to the death of a child.

On Wednesday, the Texas Department of State Health Services (TDSH) said an unvaccinated child had died from measles as the state battles its worse outbreak of the disease in 30 ye

Texas now has 146 reported cases of measles statewide. Officials in San Antonio warn hundreds, if not thousands of people may have been exposed to a single infected patient. Doctors say the best protection against infection is vaccination.