Both Arizona and South Carolina, two states that recorded hundreds of measles cases in recent months, are reporting significant slowdowns in new cases reported this week. Utah, however, has now tracked more than 400 cases in an outbreak that began last year in the southwest corner of the state and has now spread to Salt Lake City and other areas.
In Arizona,officials reported no new measles cases today, with the total still 56 for 2026. Last week, officials added only one case. Since last year, Arizona has recoded 276 measles cases, of which 97% occurred in people who were unvaccinated. The state has also documented 20 measles-related hospitalizations.
Most of the Arizona cases have occurred along the Utah border, with Mohave County recording 214 cases since August 2025.
47 new cases in Utah
In Utah, state officials say there are now 405 confirmed measles cases, with 98 recorded in the last three weeks. The new case count is 47 more than what was recorded at the end of last week, when state epidemiologists warned the public that 120 people had sought emergency care because of measles, with 31 hospitalized and three placed in the intensive care unit.
Roughly half of the state’s cases have occurred in the Southwest Utah health district, home to several unvaccinated communities of Fundamentalist Latter Day Saints, a breakaway sect of Mormons.
South Carolina tracks 2 cases, CDC reaffirms support
In contrast, South Carolina’s outbreak seems to be slowing, with only two new cases reported in an update yesterday. The case total now stands at 993. There are currently 42 people in quarantine and two in isolation.
Of the 993 cases, 637 have occurred in school-aged children and 216 in children five years and younger. Of case-patients with known vaccination status, 927 have been unvaccinated, 19 have been partially vaccinated, 26 have been fully vaccinated, and 21 have unknown status.
Earlier this week, the Centers for Disease Control and Prevention (CDC) reaffirmed its commitment to the South Carolina Department of Public Health and the North Carolina Department of Health and Human Services to help contain and prevent measles outbreaks.
“At South Carolina’s request, CDC disease detectives from the agency’s Epidemic Intelligence Service (EIS) are supporting on-the-ground response activities,” the CDC said. “Their specialized expertise in epidemiology and outbreak investigation will help identify transmission patterns, strengthen containment strategies, and guide targeted vaccination and prevention efforts to protect communities.
