Grant County health officials are tracking potential exposures after two unvaccinated children from the same household contracted measles following international travel, marking the county’s first confirmed cases and triggering warnings for anyone who visited Moses Lake medical facilities during a critical week in early March.
The Grant County Health District received notification Monday of the two confirmed infections. Both children are now recovering at home after one required initial hospitalization. Health officials believe the siblings picked up the virus during recent travel outside the United States, though authorities have not disclosed which country they visited or when they returned.
Dr. Alexander Brzezny, Grant County health officer, used the cases to urge residents to verify their vaccination status. “Now is the time to make sure you and your family are protected from measles. Check your vaccination records and get up to date with the MMR vaccine. Measles is highly contagious and can lead to serious illness, but it’s also highly preventable. Two doses of the MMR vaccine are about 97% effective at protecting against measles,” Brzezny said.
The children visited three Moses Lake medical facilities while contagious, potentially exposing others before diagnosis. The exposure timeline stretches from March 7 through early March 12, covering visits to a walk-in clinic, a family care center, and the emergency department at Samaritan Hospital. Health officials list exposure windows that extend two hours beyond when patients left each facility, accounting for how long measles virus particles can linger in the air.
Anyone present at Confluence Direct Care walk-in clinic on March 7 between 9:20 a.m. and 1 p.m. may have been exposed. The same applies to people at Samaritan CareToday on March 10 from 2:20 p.m. to 5:50 p.m. The Samaritan Emergency Department saw the infected children twice: March 11 from 2:15 p.m. to 8:30 p.m., and again late March 12 from 9:05 p.m. past midnight.
Grant County Health District said anyone at those locations during exposure windows who lacks up-to-date MMR vaccination should expect potential illness between March 14 and April 2. The three-week incubation window reflects how long measles takes to develop after exposure. People with weakened immune systems may show symptoms even later.
The health district is working to identify and directly contact people who had close proximity to the infected children. But officials acknowledge they cannot reach everyone who walked through waiting rooms or shared hallways at the medical facilities, making public warnings critical to alerting potential victims.
Getting vaccinated within 72 hours of exposure offers strong protection against developing measles, health officials said. People who think they were exposed should immediately check vaccination records through MyIR Mobile or contact their doctor to determine if they need shots. The health district emphasized particular urgency for pregnant women, parents of infants under six months, and anyone with compromised immune systems, as post-exposure treatments beyond vaccination may be available.
People who develop unexplained rashes should call their doctor before showing up at clinics to avoid spreading virus in medical settings. If visiting a health care facility becomes necessary, wear a well-fitting mask, preferably an N95 respirator, and immediately alert staff about the exposure and symptoms. Those not current on MMR vaccination should limit contact with others, especially people whose immunity status is unknown.
Measles spreads with extraordinary efficiency. Someone without immunity can contract the virus simply by entering a room where an infected person was present hours earlier. The virus particles remain suspended in air and viable far longer than most respiratory infections, making it among the most contagious diseases known.
Grant County Health District said the overall risk to the public remains low because most residents have immunity through routine childhood vaccinations. But maintaining that protection depends on vaccination rates staying high enough to prevent sustained transmission. The cases arrive as Washington state grapples with rising measles activity, with 26 confirmed cases statewide so far in 2026 compared to 12 for all of 2025.
