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San Mateo County Confirms First 2026 Measles Case

  //travel-leisure.news-articles.net/content/2026/ .. teo-county-confirms-first-2026-measles-case.html
  Published in Travel and Leisure on Sunday, February 1st 2026 at 16:56 GMT by Los Angeles Times
      Locales: California, UNITED STATES

San Mateo County, CA - February 1st, 2026 - California health officials have confirmed the state's first case of measles in 2026, identified in San Mateo County. This case, linked to recent international travel, serves as a stark reminder of the persistent threat of this highly contagious disease and raises concerns about a potential resurgence, especially given current trends in vaccination rates.

The patient, whose identity remains confidential to protect privacy, is currently isolating to minimize the risk of further transmission. The San Mateo County Public Health Department has swiftly initiated a contact tracing investigation, working to identify and notify individuals who may have been exposed during the patient's infectious period. Residents are strongly encouraged to review their vaccination status and seek testing if they suspect potential exposure.

"This isn't simply about one case," explains Dr. Grace Lee, an epidemiologist with the San Mateo County Health Department. "This is an early warning signal. Measles is incredibly efficient at spreading, and even a single case can quickly escalate into an outbreak, especially in communities with lower vaccination coverage."

The Resurgence of a Preventable Disease

Measles was declared eliminated in the United States in 2000, a testament to the success of widespread vaccination programs. However, in recent years, we've seen a worrying trend of decreasing vaccination rates, coupled with increased international travel. These factors create a perfect storm for the reintroduction and spread of measles.

The disease itself is a viral infection characterized by fever, cough, runny nose, and a distinctive rash that typically begins on the face and spreads throughout the body. While most people recover, measles can lead to serious complications, including pneumonia, encephalitis (inflammation of the brain), and even death. Young children, pregnant women, and individuals with compromised immune systems are particularly vulnerable.

Declining Vaccination Rates: A Growing Concern

The Centers for Disease Control and Prevention (CDC) recommends that children receive two doses of the MMR (measles, mumps, and rubella) vaccine, with the first dose administered between 12 and 15 months of age and the second between 4 and 6 years of age. However, national vaccination rates have been steadily declining in recent years, falling below the 95% threshold needed to maintain herd immunity - the level of protection that safeguards even those who cannot be vaccinated.

Several factors contribute to this decline. Misinformation and vaccine hesitancy, fueled by online sources and anti-vaccine movements, play a significant role. Access to healthcare, particularly in underserved communities, can also be a barrier to vaccination. The COVID-19 pandemic disrupted routine childhood immunizations, leading to a backlog of unvaccinated individuals.

International Travel and the Global Context

While the current case in San Mateo County is linked to international travel, the global measles landscape is also concerning. Outbreaks are occurring in several countries, increasing the risk of imported cases into the United States. Travelers who are not vaccinated against measles are at risk of contracting the disease abroad and bringing it back home.

"We're seeing a global resurgence of measles," notes Dr. Lee. "Areas that had previously controlled the disease are now experiencing outbreaks, and that creates a higher risk for importation into the U.S."

What Can Be Done?

The San Mateo County Public Health Department is urging residents to take the following steps:

• Check your vaccination status: Ensure that you and your family members are up-to-date on the MMR vaccine.
• Get vaccinated: If you are not vaccinated against measles, schedule an appointment with your healthcare provider or local health department.
• Monitor for symptoms: Be aware of the symptoms of measles and seek medical attention if you suspect you or someone you know may be infected.
• Practice respiratory etiquette: Cover your mouth and nose when coughing or sneezing, and wash your hands frequently.

The situation demands a proactive and multi-faceted approach. Public health officials need to address vaccine hesitancy through targeted education campaigns, improve access to vaccination services, and strengthen surveillance systems to quickly detect and respond to outbreaks. The case in San Mateo County is not an isolated incident; it's a wake-up call. A coordinated effort is crucial to prevent a widespread measles outbreak and protect public health in California and beyond.