Texas health officials reported 13 more cases today, putting the state's outbreak total at 159.
In its latest update, the CDC says it has received reports of 164 cases from 9 jurisdictions this year.
Texas health officials say there have been 20 hospitalizations in the outbreak, which began in late January.
In other measles news, Kentucky has reported a case in an adult who had recently traveled internationally.
The unvaccinated, school-age child was hospitalized in Lubbock.
Nine of the state's counties have now reported cases, though most infections are from the Gaines County epicenter.
New Mexico reported more cases in an adjacent county, with a few new confirmations from Texas in the community around Dallam and Hartley counties.
The latest update includes a case from Lubbock County, pushing the number of affected counties to 5.
New Mexico now has 3 cases in Lea County, which borders a Texas county where a larger outbreak is under way.
Officials say additional cases are likely to occur in Gaines County and the surrounding communities.
