Measles Is Back and Spreading Fast — What Clinicians Need to Know in 2025
A 2026 NEJM commentary examines the alarming resurgence of measles in 2025 and what it means for public health and clinical practice.
Summary
Measles, once considered nearly eliminated in many parts of the world, has staged a significant comeback in 2025. This commentary published in the New England Journal of Medicine responds to a major review article on the topic, offering expert perspective from researchers at the University of Newcastle and George Washington University. The resurgence is driven by declining vaccination rates, gaps in immunization infrastructure, and the virus's extraordinary contagiousness. For clinicians and health-conscious individuals alike, this is a reminder that vaccine-preventable diseases remain a real threat. Understanding the current epidemiological landscape is essential for physicians managing unvaccinated or immunocompromised patients, and for public health advocates pushing for stronger immunization programs.
Detailed Summary
Measles was once on the verge of global elimination, but 2025 has seen a troubling and significant resurgence of the disease. This NEJM commentary by Durrheim and Andrus responds directly to a comprehensive review article published in December 2025, adding expert perspective on what the data means for the current moment in global health.
Measles is caused by one of the most contagious pathogens known — a single infected individual can transmit the virus to 12 to 18 susceptible contacts. Achieving and maintaining herd immunity requires vaccination coverage above 95%, a threshold that has eroded in many communities due to vaccine hesitancy, healthcare access disparities, and disruptions caused by the COVID-19 pandemic.
The commentary situates the 2025 measles situation within a broader pattern of resurgence seen in high-income and low-income countries alike. Outbreaks have been reported across multiple continents, with children and immunocompromised adults bearing the greatest burden. Measles is not merely a rash illness — it causes immune amnesia, wiping out previously acquired immunity to other pathogens, and can lead to pneumonia, encephalitis, and death.
For clinicians, the implications are immediate. Vaccination status should be verified and updated for all eligible patients, particularly those planning international travel or living in communities with known coverage gaps. Physicians should also be alert to measles presentations in unvaccinated individuals and understand current isolation and reporting protocols.
This commentary is brief and does not present new primary data, but its publication in the NEJM signals the medical community's urgent concern. The full picture requires reading the underlying review article it references. Nonetheless, the message is clear: measles resurgence in 2025 is a preventable crisis demanding renewed clinical and public health attention.
Key Findings
- Measles resurged significantly in 2025, with outbreaks reported across multiple continents.
- Declining vaccination coverage below the 95% herd immunity threshold is a primary driver.
- Measles causes immune amnesia, increasing vulnerability to other infections beyond the acute illness.
- Clinicians should proactively verify and update MMR vaccination status in at-risk patients.
- This commentary responds to a major NEJM review, signaling high-level medical concern about the trend.
Methodology
This is a published commentary in the New England Journal of Medicine responding to a comprehensive review article on measles published in December 2025. It does not present original primary research data. The commentary reflects expert synthesis and interpretation by authors affiliated with the University of Newcastle and George Washington University.
Study Limitations
This summary is based on the abstract only, as the full text is not open access. The commentary is a brief expert response rather than a primary research study, meaning it does not present new data or statistical findings. The specific epidemiological details and clinical recommendations referenced may require reading the underlying December 2025 NEJM review article for full context.
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