Utah measles cases decline as national outbreak surges, leaving newborns vulnerable
Utah's weekly measles count has dropped, but the United States recorded its highest annual total in 35 years, forcing families with infants too young for vaccination to limit contact with relatives.
Utah health officials say the state’s measles outbreak is receding, with weekly case numbers falling sharply since a March peak and state guidance returning to the standard 12-month schedule for the MMR vaccine. Nationally, however, the disease is on the rise; the Johns Hopkins measles tracker recorded 2,295 confirmed cases in the United States as of July 21, surpassing the entire 2025 total and approaching a 35-year high.
The contrast is stark for families like Abby Laskey and Liam Hammons in Mill Creek, near Salt Lake City, whose seven-week-old daughter Kasey cannot receive the vaccine until at least six months of age. With Utah reverting to the usual immunization timeline, the couple has limited travel, avoided indoor public spaces, and postponed introductions to relatives, fearing exposure despite both parents being fully vaccinated.
"There's not a guarantee that by the time she's fully vaccinated they'll be able to meet her at all," Laskey said.
Public health experts warn that declining vaccination coverage erodes herd immunity. National kindergarten MMR coverage fell from 95.2% five years ago to 92.5% last year, below the threshold needed to protect those who cannot be vaccinated, such as newborns and immunocompromised individuals. Measles can also cause immune amnesia, weakening a child's defenses against other infections for up to two years after recovery, according to research led by immunologist Dr. Michael Mina.
Genomic analysis links Utah’s cases to a chain that began in West Texas in early 2025 and has spread to at least four other states. With 518 cases reported in Utah across 22 counties, the state accounts for a significant share of the national surge.
The United States risks losing its measles elimination status, which requires a full year without continuous domestic transmission. The Pan American Health Organization is slated to assess the status in November, but current data suggest elimination may already have been forfeited.
"If we're losing the plot on this one, what's the next thing we lose the plot on?" Hammons said, adding that rebuilding public trust will be a long process.
For now, Kasey’s parents plan to keep her home, meeting family outdoors at campsites and beaches while postponing flights and indoor gatherings, leaving extended relatives waiting for a safe opportunity to meet the infant.