Children are currently hospitalized and being monitored.

Health officials confirmed Monday that three children who traveled to Denver through DIA have tested positive for measles.

"Three unvaccinated children who are visiting Colorado from another state tested positive for measles after traveling to a country with an ongoing measles outbreak. They are currently hospitalized at Children’s Hospital Colorado (Children’s Colorado). Tri-County Health Department is working with local partners to identify people who may have been exposed to measles since the children landed in Colorado," said the Tri-County Health Department in a statement.

You may have been exposed if you traveled to the following places at the following times:

Wednesday, Dec. 11, 2019, from 1:15–5:45 p.m.:

Denver International Airport (DEN) - Concourse A, train to baggage claim, west baggage claim, and west level 4 passenger pick up areas.

Thursday, Dec. 12, 2019, from 1–7:30 p.m.:

Children's Hospital Colorado - Anschutz Campus Emergency Department, 13123 E 16th Ave, Aurora, CO 80045.

Because measles is highly contagious, all passengers on the same plane as the children have been contacted directly, as they are at greater risk for contracting the illness. Tri-County Health Department is urging pregnant women, infants or persons with a weakened immune system who visited the above locations during the identified dates and times to contact their healthcare provider as soon as possible.

Health officials say that there is little to no risk that anyone visiting the same ER as the children will contract measles, and there is no ongoing risk of exposure at this point at either location. However, anyone else who may have come in contact during the identified days and time is asked to monitor themselves for symptoms of measles.

"Symptoms of measles can begin 7 to 21 days after exposure, and include a fever of 101 degrees or higher, a runny nose, red eyes, and coughing. Two to four days after the first symptoms, a red blotchy rash starts on the face and spreads to the rest of the body," says Tri-County Health.

Measles is a highly contagious, vaccine-preventable respiratory illness that can be spread by coughing and sneezing and is spread through the air. The easiest way to combat it is to get vaccinated.