Researchers say the two were passengers on the same worldwide flight last month.

The two are not related.

"This outbreak is about unvaccinated children, not specific communities", said Minnesota Health Commissioner Dr. Ed Ehlinger. Rather, the person with measles was a customer at the two restaurants while contagious.

The Minnesota Department of Health released a statement on Friday, in which they explained how the affected children ranged in age from 1 to 4 and that seven of the concerned children came from the Somali-American community. This case is an adult and the direct result of an exposure to the state's first case of the year in late March. This new case of measles is related to that first case.

"We're working with the Somali community in the Twin Cities to alert people to the outbreak", Ehresmann said.

Measles is a viral infection. A red, raised body rash appears on the head and face, eventually progressing to the rest of the body.

Washtenaw County health officials say anyone who was at Mark's Midtown Coney Island on Plymouth Road in Ann Arbor between noon and 3 p.m. April 6 or at Benny's Family Dining on Industrial Highway during the same hours the following day should monitor themselves for rash with fever or other symptoms consistent with measles for 21 days.

Measles can be spread through the air by coughing and sneezing.

Because measles is highly communicable, vaccination is the best line of defense. Successfully controlling it and preventing outbreaks requires high levels of immunity in all communities, officials noted.

In 2016, MI had a single case of measles, which health officials describe as a highly contagious viral infection that can lead to pneumonia, brain inflammation, hospitalization or death.

The CDC reports reveal that an average of 60 measles cases have been reported yearly between 2001 and 2012. In 2014, there were 667 cases in the USA, including the five cases in MI. The vast majority of people who get measles have not been vaccinated against it.

"The measles vaccine is highly effective and very safe", she said.

Having two doses of MMR vaccine at least 28 days apart is fully protective.

The vaccination, or documentation of immunity to measles, is recommended for all persons travelling internationally, Wells said.