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Ventura County public health warns measles risk rising; county has no confirmed cases
Summary
Public health officials told the Board of Supervisors the county has no confirmed measles cases but vaccine coverage among kindergarteners lags behind the state, and federal funding uncertainty could shrink local vaccination outreach.
Ventura County Public Health briefed the Board of Supervisors on April 29 about an increase in measles cases in the U.S. and the county’s readiness to respond. Health Officer Dr. Aldine Castell said Ventura County had not reported a confirmed measles case since 2017 and that, as of April 25, the United States had recorded 884 cases for 2025 — many connected to travel.
Dr. Castell told the board the disease is highly contagious and that a single case could lead to many exposures in areas of low immunization. "Two doses of MMR are about 97% effective in preventing measles," she said, and urged vaccination where appropriate. She said 97% of recent cases nationally occurred in people who were not immunized or whose vaccination status was unknown.
Castell also described local outreach: public-health staff are meeting monthly with school nurses and the Ventura County Office of Education, offering provider advisories, bilingual messaging and some state-supplied MMR vaccine doses for people without insurance. The county’s pediatric isolation capacity is limited, and the county estimates a single severe outbreak could stress hospital pediatric beds and respiratory isolation rooms. The Centers for Disease Control estimate public-health response costs at roughly $30,000 to $50,000 per case, Castell said.
County public-health director Rigo Vargas told supervisors that cuts to federal funding have reduced the county’s capacity for mobile vaccine clinics and other in‑person services and could limit the scale of outreach. "We are able to respond to the current situation," Vargas said, "but should a very large outbreak occur, our options would be challenged because of staff reductions tied to earlier COVID-era funding changes."
Supervisors pressed public-health staff on practical questions — including whether immunocompromised people have booster options, and the county’s plan for contact tracing and testing if a case appears. Castell said coverage depends on an individual’s insurance, and clinicians should determine needs for any additional doses for people with specific vulnerability.
Public comment: The board heard from several members of the public during general comment who raised concerns about COVID-19 and other vaccines. Multiple speakers, including Ronald F. Owens Jr., Amalia (Growth Factor), and Julie Threet, claimed adverse effects from COVID-19 vaccines and urged the county to stop vaccine promotion. The board did not change its public-health recommendations during the meeting. Public-health officials reiterated that MMR remains a safe and effective tool against measles and that outreach continues.
Board action: The board voted unanimously to receive and file the measles status report.
Why it matters: Measles is highly contagious, and local vaccine coverage gaps can allow outbreaks to spread. County officials said they will continue school and provider outreach, bilingual messaging and limited clinics while monitoring funding and vaccine supply.
