New research suggests official case counts may capture only a fraction of actual measles infections across the U.S.
CLEVELAND — Nearly two thousand measles cases have been confirmed in the United States in the first four months of 2026. But according to new research, that number may only tell part of the story — and possibly, just a small part.
New science presented at the Centers for Disease Control and Prevention’s Epidemic Intelligence Service conference is fundamentally reframing how large these outbreaks actually are. Genomic sequencing from the Arizona-Utah outbreak suggests it was at least six-and-a-half times larger
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