San Diego County, January 21, 2026
San Diego County is witnessing a significant rise in measles cases, with current levels reaching a peak not seen in 33 years. Health officials are sounding the alarm for residents to get vaccinated as reports indicate a vaccination rate of only 70.6%, which falls below the threshold necessary for herd immunity. This surge is part of a broader national trend with numerous states reporting confirmed cases. Health authorities emphasize the critical need for vaccinations to curb the outbreak and protect public health.
San Diego County Reports Measles at 33-Year High
San Diego County is experiencing a significant rise in measles cases, reaching levels not seen in 33 years. Health officials are urging residents to ensure they are vaccinated to prevent further spread.
Current Situation
As of January 21, 2026, San Diego County has reported a substantial increase in measles cases, marking the highest incidence since 1993. This surge is part of a broader national trend, with reports indicating 171 confirmed measles cases across nine states as of January 13, 2026.
Vaccination Rates and Risks
Despite efforts to increase vaccination coverage, San Diego County’s measles vaccination rate remains below the 95% threshold necessary to achieve herd immunity. Recent data indicates a vaccination rate of approximately 70.6%, categorizing the county as “medium risk.”
Health Recommendations
Health officials emphasize the importance of vaccination to prevent the spread of measles. The MMR (Measles, Mumps, Rubella) vaccine is recommended for all individuals, with two doses providing 97% effectiveness.
Background
Measles is a highly contagious viral disease characterized by symptoms such as high fever, cough, runny nose, red eyes, and a distinctive rash. The disease can lead to serious complications, especially in young children and adults over 20. In 2024, there was an increase in confirmed measles cases throughout the United States, making vaccination efforts more critical than ever. Contact tracing and ensuring everyone has received two doses of the measles, mumps, rubella (MMR) vaccine are important strategies for control.
The Epidemiology and Immunization Services Branch (EISB) coordinated responses to three unrelated cases of measles, highlighting the ongoing risk and the need for vigilance in vaccination efforts. For further information about measles, other vaccine-preventable diseases, and access to vaccinations, residents are encouraged to reach out to the local health authorities.
FAQ
What is the current measles situation in San Diego County?
As of January 21, 2026, San Diego County has reported a significant increase in measles cases, reaching levels not seen in 33 years. Health officials are urging residents to ensure they are vaccinated to prevent further spread.
What are the vaccination rates in San Diego County?
San Diego County’s measles vaccination rate remains below the 95% threshold necessary to achieve herd immunity. Recent data indicates a vaccination rate of approximately 70.6%, categorizing the county as “medium risk.”
What are the symptoms of measles?
Measles is a highly contagious viral disease characterized by symptoms such as high fever, cough, runny nose, red eyes, and a distinctive rash. The disease can lead to serious complications, especially in young children and adults over 20.
How can measles be prevented?
Health officials emphasize the importance of vaccination to prevent the spread of measles. The MMR (Measles, Mumps, Rubella) vaccine is recommended for all individuals, with two doses providing 97% effectiveness.
What should I do if I think I’ve been exposed to measles?
If you believe you’ve been exposed to measles, contact your healthcare provider immediately. They can advise you on appropriate steps, including potential vaccination or immune globulin treatment, depending on the timing of exposure and your vaccination status.
Key Features
| Feature | Details |
|---|---|
| Current Measles Cases | Significant increase in San Diego County, reaching levels not seen in 33 years. |
| Vaccination Rate | Approximately 70.6%, below the 95% threshold for herd immunity. |
| Health Recommendations | Ensure vaccination with two doses of the MMR vaccine for 97% effectiveness. |
| Symptoms | High fever, cough, runny nose, red eyes, and distinctive rash. |
| Prevention | Vaccination is the most effective method to prevent measles spread. |
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Author: STAFF HERE SAN DIEGO WRITER
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