The CDC is urging travelers to ensure they are vaccinated against measles as the outbreak spreads ahead of the spring and summer travel season.
The outbreak has sickened nearly 200 people in Gaines County, Texas. A neighboring county in New Mexico has seen 21 new cases since Tuesday.
Measles cases have risen to nearly 200 in Texas as New Mexico also records more than two dozen cases. NBC News' Erika Edwards reports on how Secretary of Health and Human Services Robert F. Kennedy Jr.