Clark County Public Health is investigating a confirmed case of measles in an unvaccinated Clark County child, according to a public health alert issued July 23. The child was contagious while at Vancouver Clinic, Salmon Creek 1 Clinic, 2525 NE 139th St., from 1:30-5:30 p.m. on July 17, 2026. Public Health urges unvaccinated individuals who were present at that time to stay home for 21 days and monitor for symptoms.
Measles spreads easily through the air and is highly contagious before symptoms appear, the alert states. Two doses of the MMR vaccine are 97% effective at preventing measles. Clark County Public Health advises unvaccinated residents to consult their healthcare provider or use the MyIR Mobile system to check vaccination records. The agency notes that measles can cause serious complications, including pneumonia, ear infections, and brain swelling, with a fatality rate of 1-2 per 1,000 cases.
Residents seeking more information can visit the Clark County Public Health measles investigation webpage or contact Marissa Armstrong, communications manager, at 564. 397. 7307. The public health alert emphasizes that vaccinated individuals are protected, with the MMR vaccine providing 93% effectiveness after one dose and 97% after two doses.