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News
As the US measles outbreak surpasses 3,300 cases, adults are bearing a surprisingly heavy burden. Over 37% of CDC-confirmed cases are in people older than 20, and adult hospitalizations now outnumber those in children. Experts are urging clinicians to check vaccination status in adult patients and address vaccine hesitancy — because measles, with no antiviral treatment, can be devastating at any age.
The US measles outbreak has crossed 3,300 cases, and a striking pattern is emerging: adults are getting sick — and hospitalized — at alarming rates. More than 37% of CDC-confirmed cases are in people over 20, and as of September 11, adult hospitalizations (144) have surpassed those in children (123). In Pennsylvania alone, a 40-year-old woman recently died from measles complications, adding to a toll that already includes two child deaths in the state.
Experts point to decades of vaccine hesitancy as a root cause. Unvaccinated children have grown into unvaccinated adults, and some older adults received a less-effective inactivated vaccine in the 1960s or only a single MMR dose before 1989 — leaving gaps in immunity. With no antivirals or targeted therapies available, treatment options today remain essentially unchanged from decades past.
Key Takeaways:
Why it matters: Measles was once considered eliminated in the US, but declining vaccination rates have created a growing pool of susceptible adults who face serious — sometimes fatal — complications. Clinicians need to shift their mindset: this is no longer just a pediatric concern.
