Since 1997, the Oklahoma Department of Health has reported its first case of measles on Friday. The first confirmed case has raised concerns among officials, who now look for any secondary infections.

The person who has contracted the virus outside the United States is the spouse of an Oklahoma State University student who lives off campus. Health officials affirmed that it could take nearly two weeks before further cases could be ruled out.

The state health department officials have been investigating the case in Stillwater. As per the city of Oklahoma City Department of Airports, the patient was a passenger on a United Airlines flight flying from Houston's George Bush Intercontinental Airport on March 12.

State Epidemiologist Dr. Kristy Bradley said that the health department along with the national Centers for Disease Control and Prevention will be informing the passengers aboard the plane about the incident.

"We've determined the person was contagious from March 12 to March 19. On two dates, March 17 and March 19, the individual sought medical services at the university health services on the OSU campus", said Dr. Bradley.

The health department has also unveiled a list of locations around Stillwater that were visited by the patient. Dr. Bradley said that it was important to share these details, so that people who could have been exposed could monitor them for any symptoms if they have been immunized against the virus.

Dr. Bradley shared that a person is contagious with measles virus four days before he starts developing the measles rash and four days after the rash has appeared. Therefore, it can be said that there is approximately eight-day period when the person is contagious with the virus. For now, there is no case but they have quite alert on this matter.