US loses measles elimination status as cases hit record

The loss of elimination status is a structural signal rather than a single-outbreak story: the designation hinges on a full year of continuous transmission, meaning the virus has found enough unvaccinated pockets to sustain itself. That matters most for public-health credibility — PAHO's verification role gives the finding external authority that domestic agencies alone might not. The open question is whether the sustained spread is confined to specific communities or reflects a broader erosion of the conditions that kept elimination intact for so long.