The patient is the fourth person diagnosed with measles this year in North Texas.

FORT WORTH, Texas — Tarrant County health officials have confirmed its first case of measles since January 2015.

The Tarrant County case is the fourth confirmed measles diagnosis so far this year in North Texas. However, health officials said the Tarrant County case isn't related to the other three.

The diagnosed patient had recently traveled out of the country to "an area experiencing an increase in measles cases," said Vinny Taneja, the director of Tarrant County Public Health, in a statement released late Thursday morning.

Earlier this week, health officials in Collin County confirmed its second case of measles in Collin County. The first case confirmed this year in North Texas was reported in February in Denton County.

"Tarrant County Public Health reminds residents that measles is a vaccine-preventable disease," read a statement from Al Roy, a spokesman with the county. "Adults who have received a measles vaccine series are considered immune. Those who have not been immunized against measles, or have never had measles, should contact their healthcare provider. Residents considering foreign travel should always check their health status beforehand."