First confirmed measles case in San Bernardino County

Last week the San Bernardino County Department of Public Health (SBCDPH) confirmed the first positive case of measles in the county since 2023. The case involves an unvaccinated minor who was visiting California from another state.

In a release issued Feb. 6, SBCDPH went on to state that the case is unrelated to the recently reported Disneyland exposure.

Sometime on Jan. 29th between noon and 3 p.m., the individual visited a Walmart Supercenter located at 1333 N. Mountain Ave. in Ontario. SBCDPH may contact individuals identified through a contact investigation and is alerting the public that people who were at this location during the identified timeframe may be at risk of developing measles, especially if unvaccinated, immunocompromised or pregnant.

Measles is a highly contagious virus that spreads through the air when an infected person breathes, talks, coughs or sneezes. Symptoms typically develop seven to 21 days after exposure and often begin with fever, cough, runny nose and red eyes. Within a few days, a red, blotchy rash appears, usually starting on the face and spreading downward to the rest of the body. Individuals with measles can be contagious four days before the onset of rash and four days after.

Measles is not just a rash and fever. Measles can lead to serious health complications, including ear infections, lung infections, diarrhea, and in rare cases, brain swelling or death. The best protection against measles is vaccination.

“Vaccines are our best defense against infectious diseases, protecting both individuals and the wider community,” stated Dr. Sharon Wang, San Bernardino County Health Officer. “Staying healthy and staying up to date with vaccinations is a key step in safeguarding public health and saving lives.”

Individuals who feel ill or believe they may have been exposed, are recommended to stay home and contact a healthcare provider immediately. Before visiting a healthcare facility, call ahead so that measures can be taken to prevent the spread of measles. Wearing a mask when seeking care can also help reduce transmission.

To learn more about measles, visit the California Department of Public Health website.