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Measles Cases Hit 33-Year Record as CORI Deploys Outbreak Response Tools

July 10, 2025

The United States is experiencing its worst measles outbreak in 33 years, with 1,277 confirmed cases across 38 states and DC, surpassing 2019 levels and marking the largest outbreak since 1992. Health officials attribute the surge to declining vaccination rates and travel-related exposures that have spread the disease across state lines. The Center for Outbreak Response Innovation (CORI), operating within the Johns Hopkins Center for Health Security, has developed specialized tools and resources to help jurisdictions manage outbreaks, including analytic platforms, risk assessments, and decision-support products.

Who is affected

  • Communities across 38 states and the District of Columbia
  • Local and state public health agencies experiencing strain from containment efforts
  • State, tribal, local, and territorial health departments
  • Unvaccinated populations (implied as vulnerable to infection)

What action is being taken

  • CORI is providing specialized tools and resources to help jurisdictions prepare for and respond to outbreaks
  • CORI is developing and refining analytic platforms, risk assessments, and decision-support products
  • CORI is providing modeling outputs, situation reports, and guidance documents to support containment strategies
  • CORI is managing a national Community of Practice connecting health departments to share experiences
  • Health departments are working to contain transmission of measles

Why it matters

  • The current outbreak represents the largest measles outbreak in the United States since 1992
  • The 1,277 confirmed infections have already exceeded the number reported in 2019
  • Declining vaccination rates combined with travel-related exposures are creating conditions for widespread transmission
  • The surge is placing significant strain on public health agencies working to contain the disease
  • Measles outbreaks require coordinated responses across jurisdictional lines

What's next

  • No explicit next steps stated in the article

Read full article from source: The San Diego Voice & Viewpoint