EVERETT, WA – A second case of measles in an infant, and third case overall, have now been reported in Washington State since January 1.

Health officials were notified April 1 of a new positive measles case in a Snohomish County infant. The infant was likely exposed to measles during recent travel abroad.

Officials say people who were at certain locations in Snohomish and King counties may have been exposed to measles. Exposed individuals should check to make sure they have immunity against measles.

According to the CDC, as of Thursday morning, 483 cases of measles have been reported nationwide in 2025.  That number is up significantly as 285 cases were reported in all of 2024.  Just 59 were reported in 2023.

Officials re reminding the public that the measles vaccine is highly effective. Two doses of the measles, mumps and rubella (MMR) vaccine provides about 97% protection against getting infected by measles. The protection lasts a lifetime.

“Our thoughts are with the child and their family, and we sincerely hope for a full and speedy recovery,” said Dr. James Lewis, Health Officer for the Snohomish County Health Department. “Measles is a serious and highly contagious disease, and young children—especially those who are too young to be vaccinated—are particularly vulnerable to its complications. Vaccination remains our best protection against measles. We urge everyone, especially those who spend time around young kids, to ensure they are immune, both to protect themselves and to shield those who are most at risk. If you’re planning international travel, it’s also important to speak with your healthcare provider about what vaccines may be needed for you and your family to stay healthy and protected while abroad.”

Children need two doses of MMR vaccine: the first dose at age 12-15 months, and the second dose at age 4-6 years. Babies ages 6-11 months should get an early dose if traveling internationally. They will still need two additional doses later.

“Measles is spreading around the U.S. and world. Vaccination is the most effective way to protect our children, not only from serious diseases like measles, but also to ensure they can attend school safely,” said Elysia Gonzales, Medical Epidemiologist for Public Health – Seattle & King County. “If you haven’t gotten around to taking your child in for vaccination, make an appointment with your child’s provider. In Washington State, all children under age 19 can get vaccines for free.”

Related to the most recent outbreak in Washington State, officials say others could have been exposed to measles at the below public places during the specified timeframes. Officials say measles can remain in the air for up to two hours after someone with the virus leaves the area.