FARGO — The North Dakota Health and Human Services Department said two measles cases have been reported in Cass County, the first to be recorded in eastern North Dakota.

Human services said both cases are unvaccinated individuals who contracted the disease through international travel. One of them is hospitalized.

The health and human services department said members of the public who were at two Essentia Health locations in West Fargo and Fargo may have been exposed. Exposure may have occurred at the Essentia Health Clinic, 3150 Sheyenne St., Ste. 240, West Fargo, between 2:30 and 6 p.m. on Wednesday, May 7, or between 5:30 and 6 p.m., Friday, May 9, at the Essentia Health Walk-in Care, 52nd Avenue, 4110 51st Ave. S, Fargo.

The two new cases bring the total cases reported in the state to 11. The Cass County cases are not believed to be related to the nine cases recently reported near Williston, in Williams County.

The first case was reported Friday,

May 2, when the North Dakota Department of Health and Human Services said an unvaccinated child from Williams County contracted the virus, likely during an out-of-state visit. The number jumped to nine by Friday, May 9. Four of the individuals were contagious while inside three different Williston schools.

Individuals who have not received a dose of the measles, mumps, rubella (MMR) vaccine should quarantine, or stay home, and monitor for symptoms for 21 days.

Those who have been exposed but are vaccinated do not need to quarantine. However, the department of health and human services said they should still monitor for symptoms for 21 days after exposure.

Measles is a highly contagious, viral illness that can be fatal, particularly for young children and those with compromised immune systems. Measles spreads through the air and can remain in a room and on surfaces for up to two hours, sometimes even traveling between floors through ventilation systems.

Measles symptoms often include a fever, cough, runny nose or eye irritation followed by a body-wide rash. Measles spreads easily through the air and remains contagious for several days before and after symptoms appear.

There is no specific medical treatment for measles, though antibiotics may be used in cases with a developed secondary bacterial infection.

According to the state health department, most North Dakotans are vaccinated against measles, and the risk to the general public is low. People who were vaccinated as children and adults born before 1957 are considered protected due to previous infection.

“The MMR vaccine is 93% effective after one dose and 97% effective after two doses,” Molly Howell, state immunization director, said in a statement. “People who are vaccinated and exposed to measles are not likely to develop the disease. MMR vaccination is critical to preventing the spread of measles in the community.”

The MMR vaccine is recommended starting at 12 to 15 months of age, with a second dose at 4 to 6 years of age. Children who have already received two post-12-month doses of MMR are considered fully vaccinated.

For information about measles, vaccination, or local clinic availability, contact the HHS Immunization Unit at 701-328-2378 or 711 (TTY), or visit hhs.nd.gov/measles.

Our newsroom occasionally reports stories under a byline of “staff.” Often, the “staff” byline is used when rewriting basic news briefs that originate from official sources, such as a city press release about a road closure, and which require little or no reporting. At times, this byline is used when a news story includes numerous authors or when the story is formed by aggregating previously reported news from various sources. If outside sources are used, it is noted within the story.