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Measles cases are resurging on campuses and beyond
A combination of falling vaccination coverage, growing pockets of susceptibility and widespread misinformation is driving the recent rise in measles on college campuses and in communities. Health departments have reported concentrated clusters — one university outbreak first involved more than 40 people and later reports put cases at nearly 60 — while officials say confirmed infections now span dozens of states. Those clusters often start when an infectious traveler brings the virus into a population where many people are not fully immune.
Measles is one of the most contagious diseases known, so even a small decline in two-dose MMR (measles-mumps-rubella) coverage can allow rapid spread among students living in close quarters. Contributing factors include:
- Lower childhood vaccination rates in some counties and school districts.
- Increases in exemptions or missed doses during the pandemic years.
- Organized anti-vaccine campaigns and political actions that weaken school immunization requirements.
Public-health responses focus on stopping transmission quickly. Typical steps include case finding and contact tracing, offering rapid vaccination clinics to close contacts, and, when needed, placing infected people in isolation. Local authorities have also used temporary measures such as school screening and masking in settings with intense spread. Health leaders warn that vitamin A can help treat measles complications in children but is not a substitute for immunization.
Why this matters: the U.S. once held measles elimination status — meaning ongoing endemic spread was interrupted. Widespread outbreaks threaten that status, increase hospitalizations and endanger people who cannot be vaccinated (young infants, some immunocompromised patients). The most effective defense remains ensuring people are up to date with MMR: verify records, get a dose if missing, and seek medical attention promptly for fever and rash.
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