What's happened
Measles cases increased significantly in early 2026, with over 1,000 new cases in the first three weeks across the Americas and ongoing outbreaks in Israel and Europe. Vaccination gaps and misinformation continue to hinder efforts to control the disease, which remains highly contagious and deadly without immunization.
What's behind the headline?
The recent spike in measles cases underscores the fragility of global immunization efforts. Despite decades of progress, declining vaccination rates—particularly in the US, UK, and parts of Europe—are fueling outbreaks. The WHO warns that unless coverage reaches 95%, herd immunity will remain elusive, and the virus will continue to circulate. The resurgence in Israel, driven by declining vaccine uptake in ultra-Orthodox communities, highlights how social and cultural factors influence disease control. The US and Mexico face rising cases, with vaccination hesitancy and misinformation playing significant roles. The global situation is worsened by political shifts, such as the US withdrawal from WHO, which hampers coordinated responses. The outbreaks threaten to undo years of progress and pose risks ahead of major events like the 2026 FIFA World Cup. Strengthening routine vaccination, combating misinformation, and improving outreach are critical to reversing this trend. The situation remains urgent, with health authorities warning that without immediate action, measles will continue to threaten vulnerable populations worldwide.
How we got here
The resurgence of measles is linked to declining vaccination rates globally, partly due to misinformation and vaccine hesitancy. The WHO and regional health agencies have warned that immunization gaps are allowing the highly contagious virus to spread, reversing years of progress towards elimination. Outbreaks are concentrated in communities with low vaccine coverage, especially among children under five, and are exacerbated by political and social factors affecting vaccine access and acceptance.
Our analysis
The Reuters report highlights the sharp decline in cases from 127,412 in 2024 to 33,998 in 2025, yet notes ongoing transmission and the need for stronger vaccination efforts. Al Jazeera emphasizes the rising cases in the Americas, with over 1,000 new cases in the first three weeks of 2026, and details outbreaks in the US, Mexico, and Canada, citing declining vaccination rates and misinformation as key factors. The Independent discusses the resurgence in Israel, where the outbreak has resulted in the highest death toll since 2018-2019, driven by declining immunization in ultra-Orthodox communities. It also warns of the broader global trend, including the UK, where vaccination rates have fallen below herd immunity thresholds, risking large outbreaks and economic costs. All sources agree that vaccine hesitancy, misinformation, and social factors are major barriers to controlling measles, and that urgent, coordinated efforts are needed to prevent further spread.
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