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Measles outbreaks are growing along the Utah-Arizona border and in South Carolina, where hundreds are in quarantine.
Between Friday and Tuesday, South Carolina health officials confirmed 27 new measles cases in an outbreak in and around northwestern Spartanburg County. In two months, 111 people have been sickened by the vaccine-preventable virus.
More than 250 people, including students from nine area elementary, middle and high schools, are in quarantine — some for the second time since the outbreak began in October. Most of the state’s new cases stemmed from exposures at Way of Truth Church in Inman. Church leaders have been “very helpful,” said state epidemiologist Dr. Linda Bell.
“We are faced with ongoing transmission that we anticipate will go on for many more weeks, at least in our state,” said Bell.
In Arizona and Utah, an outbreak has ballooned since August. Mohave County, Arizona has logged 172 cases and the Southwest Utah Public Health Department has logged 82 cases. The border cities of Colorado City, Arizona, and Hildale, Utah, are the heaviest hit.
Overall, Utah has confirmed 115 measles cases this year. Arizona has confirmed 176.
Nationally, the measles case count is nearing 2,000 for a disease that has been considered eliminated in the U.S. since 2000, a result of routine childhood vaccinations.
Last month, Canada lost that designation — which applies when there is no continuous local spread of the virus — as did the larger health region of the Americas.
Experts say the U.S. is also at risk of losing that status. For that to happen, measles would have to spread continuously for a year. A large outbreak in Texas, New Mexico and Oklahoma that started in January sickened nearly 900 and kicked off the United States’ worst measles year in more than three decades.
All but eight states have logged at least one measles case this year, according to the Centers for Disease Control and Prevention. The CDC has confirmed 47 outbreaks this year, compared with 16 in 2024. Three people — two of them Texas school children — have died.
The measles, mumps and rubella vaccine is safe and provides 97% protection against the disease after two doses. Most children in the U.S. are required to get the shot to attend school. But vaccination rates have declined as more parents waive the shots or have fallen behind on recommended vaccination schedules.
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The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education and the Robert Wood Johnson Foundation. The AP is solely responsible for all content.
