County warns of potential exposure to measles at Sharp Memorial in Kearny Mesa

San Diego County officials are notifying the public of a potential measles exposure at Sharp Memorial Hospital’s emergency department.

An unvaccinated out-of-state adult who later tested positive for measles visited the emergency department on March 11 during their infectious period. During the visit, the county states that the patient was evaluated for fever, but had no other symptoms suggestive of measles.

The county is asking those who have received care or accompanied someone at the emergency department between 11:22 a.m. and 4:35 p.m. to contact County Health Services at (866) 358-2966.

The county is working closely with Sharp Memorial Hospital to identify patients and employees who may have been exposed and assess their risk of developing measles.

No measles cases have been reported in San Diego County in 2026, according to the county. Last year, the county identified one case linked to international travel.

“Measles is extremely contagious and can be spread easily by coughing, sneezing or simply sharing the same air space as an infected person,” said Dr. Sayone Thihalolipavan, M.D., M.P.H.., County Public Health Officer.  

Measles symptoms

Measles is an acute viral respiratory illness. Measles typically develops seven to 21 days after exposure. Early symptoms include fever, cough, runny nose and red eyes. A red rash usually appears one to four days later, beginning on the fast and spreading downward.

A person is considered contagious four days before and four days after the rash appears.

For more information about measles, other vaccine-preventable diseases and the shots that protect against them, visit the County’s  Immunization Branch online or call (866) 358-2966.