Pan American Health Organization

Rule Changes

Has not published the outcome of its April 13 review; an expert commission was expected to decide in the week after November 4 whether the U.S. still meets elimination criteria

The CDC reported 5,182 measles cases in 2026 as of November 6, the highest annual total since 1991 and more than double all of 2025, with at least 562 hospitalizations. Children and teenagers make up almost 60 percent of confirmed cases, and 812 cases were in children under 5 as of October 29.

Updated 4 days ago

Rule Changes

Reporting 56,753 confirmed measles cases in the Americas in 2026

Measles infected an estimated 15.6 million children under five in 2023, up 40% from 11.1 million in 2019, according to a Global Burden of Disease study published in Nature Medicine. The rise reversed most of a nearly 80% decline recorded between 1990 and 2019.

Updated 6 days ago

New Capabilities

As of September 2026: Convened the expert review panel that validated Chile

Chile's last human case of dog-transmitted rabies came in 1972, in the central city of Chillán. On September 14, 2026, the World Health Organization (WHO) validated the country as free of dog-transmitted rabies as a public health problem — the first South American nation to clear that bar.

Updated Sep 17