There is no fresh national measles number to report this Sunday, and that fact is itself the update. The CDC's case tracker was last refreshed August 21, carrying confirmed cases reported as of noon Thursday: still 2,777 nationwide, split between 2,761 cases across 47 jurisdictions and 16 among international visitors, with 36 outbreaks logged for the year. The count has not moved in two consecutive weekly refreshes. [1]

Friday's edition documented why that frozen number rolls straight into the school year, the worst since 1991, with half the caseload sitting in two exemption-friendly states. None of the structural facts have changed: 94 percent of patients were unvaccinated or of unknown status, 193 people totaling 7 percent of cases have been hospitalized, and kindergarten MMR coverage remains well below the 95 percent threshold that keeps a classroom from amplifying an introduction. [1]

The surveillance calendar matters more than usual this month because exposure risk now moves at the speed of the school bell rather than the news cycle. Federal counts land Fridays at noon, reflecting the prior Thursday; state dashboards run faster but unevenly. A parent checking Sunday is reading data that was already four days old when posted, describing infections that began before that.

The number to watch is not 2,777 but whatever replaces it when the Friday refresh returns. If the total finally climbs while classrooms fill, the gap between the ledger and the hallway will be the fall's defining public-health chart. Check your school's exemption rate, not the national counter. The counter is resting. The virus is not. [1]

-- NORA WHITFIELD, Chicago