On Mar. 11, 2025, the Oklahoma State Department of Health (OSDH) reported the first two measles cases in the state. The OSDH has been on high alert, monitoring the situation with the ongoing measles outbreak in Texas and New Mexico that includes two deaths to date.

The cases are being reported to the U.S. Centers for Disease Control and Prevention (CDC) as probable cases based on the facts that the individuals reported exposure associated with the Texas and New Mexico outbreak.

After realizing they had been exposed to measles, the individuals took the proper precautions by immediately excluding themselves from public settings and staying home throughout their contagious period.

Measles can be prevented with an MMR vaccine. The vaccine is recommended for children at 12 to 15 months of age and again at four to six years of age. Two doses of MMR vaccine are about 97% effective at preventing measles, and one dose is about 93% effective.