2026 Local Measles Situation
Page originially published 3/20/2026. Last updated 5/23/2026.
Measles symptoms typically appear seven to 21 days after exposure. Early signs include fever, cough, runny nose and red eyes, followed by a rash one to four days later. People are contagious four days before and four days after the rash appears. If you think you have been exposed to someone with measles, call your doctor as soon as possible and let them know you have been exposed to someone who has measles. Your doctor can make special arrangements to evaluate you in order to avoid potentially exposing others.
For more information about measles, other vaccine-preventable diseases, and the shots that protect against them, visit www.sdiz.org. If you need additional information, please call the County of San Diego Immunization Unit at (866) 358-2966 or send an email.
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May 23, 2026
County public health officials have confirmed two unrelated cases of measles. One of the cases involved public exposure. Health officials say the infectious person spent time at these locations:
-
Marriott Marquis San Diego Marina (333 W Harbor Dr., San
Diego, CA 92101)
- 5/17/2026 from 9:00 a.m. - 3:45 p.m.
-
Baskin Robbins (791 Palm Ave. Suite 103, Imperial Beach, CA
91932)
- 5/20/2026 from 5 p.m. - 7:30 p.m.
County Immunization staff are working with the Marriott Marquis San Diego Marina to identify and follow up with potentially exposed employees and notifications are also being sent to guests who were on site during those times. People with symptoms are asked to call their healthcare provider before arriving so that infection control measures can be put in place.
The second case of measles did not result in public exposure.
March 18, 2026
An unvaccinated out of state adult who later tested positive for measles visited the emergency department during their infectious period. County public health officials are notifying community members who may have been potentially exposed to measles at the following times and locations:
-
Sharp Memorial Hospital Emergency Department (7901 Frost St,
San Diego, CA 92123)
- 3/11/2026 from 11:22 a.m. and 4:35 p.m.
County staff are working closely with Sharp Memorial Hospital to identify and notify patients and employees who may have been exposed and assess their risk of developing measles. Anyone who received care or accompanied someone at the Sharp Memorial Hospital Emergency Department is urged to contact County Public Health Services at (866) 358-2966 as soon as possible.
County News Center
Call the Immunization Unit at (866) 358-2966, or send an email, for more information.
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