Oklahoma health officials have identified three additional measles cases related to an exposure in Okmulgee County.

The Oklahoma State Department of Health and the Okmulgee County Health Department confirmed that the recent cases stemmed from a previous case discovered May 15.

Health officials last week alerted anyone who attended a Pre-K graduation ceremony at New Beginnings Church, 4101 E. 151st St. in Bixby, on May 7 to be aware of possible exposure risk.

No new cases of measles have been identified in any counties outside of Okmulgee County, officials said.

The initial case of measles announced was a person who returned to Oklahoma after traveling to various domestic and international destinations, the Health Department said.

As of Wednesday, there have been 940 cases of measles reported in 26 states. It is the highest number of cases reported in the U.S. since 1994.

State epidemiologist Laurence Burnsed said the investigation continues to involve efforts of public health staff at the OSDH, Okmulgee and other local county health departments. Interviews were completed for more than 250 individuals who were affiliated with settings where an exposure to the original case of measles may have occurred.

“This is a coordinated effort by a number of public health professionals,” Burnsed said in a statement. “It is important for us to identify settings where individuals may have been exposed to advise them of their risk and implement measures to prevent the spread of illness to those who may be unvaccinated, and persons who may be at greater risk of illness due to compromised immune systems or children who may not be old enough to receive full protection.”

People are protected if they were immunized with two doses of a measles-containing vaccine after their first birthday, if they were born during or before 1957 or if they have previously had the measles.

Anyone who is concerned about possible exposure should contact public health officials at 800-234-5963.

The Tulsa Health Department is offering the MMR vaccine at no cost to those exposed at all immunization clinics. View information about locations and hours at tulsa-health.org/vaccines. All county health departments will also be providing MMR immunizations.

Immunization records may be obtained at tulsa-health.org/shotrecords or through your private health care provider or school.

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