The Texas Department of State Health Services confirmed that measles cases in certain counties are still rising, mostly involving school-aged children. Dr. Marc Siegel discusses the threat.

State health officials are seeking to confirm the vaccine status of the four self-reported cases, but no mutations of the virus have been recorded.

A measles outbreak in Texas has climbed to nearly 60 cases in 3 weeks, with most cases occurring among unvaccinated children, according to state health officials. Out of 58 cases, 45 were reported in Gaines County,