Measles outbreaks are surging in several U.S. states, threatening to reverse decades of progress in disease elimination. This resurgence is particularly concerning, as it puts vulnerable populations at risk. Let's dive into the details.
Recent data reveals a concerning trend: measles cases are escalating across the country. South Carolina, Arizona, and Utah are among the hardest hit.
In South Carolina, health officials have confirmed 27 new measles cases between Friday and Tuesday, as of December 16, 2025. This outbreak, centered in Spartanburg County, has sickened 111 individuals in just two months. A significant number of people, exceeding 250, are in quarantine, including students from multiple schools. The Way of Truth Church in Inman has been a focal point for the outbreak. State epidemiologist Dr. Linda Bell anticipates the transmission to continue for weeks.
Meanwhile, the Arizona-Utah border region is grappling with a significant outbreak that began in August. Mohave County, Arizona, has reported 172 cases, while the Southwest Utah Public Health Department has recorded 82. The border cities of Colorado City, Arizona, and Hildale, Utah, are experiencing the brunt of the outbreak. Overall, Utah has confirmed 115 measles cases this year, with Arizona at 176.
But here's where it gets controversial... The United States has been considered measles-free since 2000, meaning there's no continuous local spread. However, with case counts nearing 2,000 nationally, the country's measles elimination status is at risk. Canada recently lost its measles-free designation, as did the Americas region. A large outbreak in Texas, New Mexico, and Oklahoma, which began in January, sickened nearly 900 people, marking the worst measles year in over three decades. All but eight states have reported at least one measles case this year, with the CDC confirming 47 outbreaks compared to 16 in 2024. Tragically, three individuals have died from the disease.
Dr. William Schaffner, a professor of infectious disease, attributes the outbreaks to parents withholding their children from vaccination. He emphasizes that vaccination is incredibly effective, and comprehensive vaccination had previously eliminated measles from the U.S.
The combined MMR vaccine is safe and offers 97% protection after two doses, according to the CDC. Most U.S. children are required to receive the MMR shot for school attendance. However, vaccination rates have declined, with more parents seeking waivers or falling behind on recommended schedules.
In September, the CDC's vaccine recommendation committee voted to recommend separating the MMRV vaccine into separate MMR and varicella shots for children under 4. This change followed a complete overhaul by Health and Human Services Secretary Robert F. Kennedy Jr., with some new members expressing vaccine skepticism.
Dr. Céline Gounder, a CBS News medical contributor, notes that while the combined MMRV vaccine is convenient, it carries a slightly higher risk of fever-related seizures in young toddlers aged 12-23 months. This side effect is most common between 14-18 months. Although these seizures are rare and usually resolve without lasting effects, they can be frightening and erode trust in vaccines. Studies show no elevated risk when MMRV is given for the second dose at ages 4-6.
And this is the part most people miss... The impact of vaccine hesitancy extends far beyond individual health, threatening the collective immunity that protects entire communities. What do you think about the balance between individual choice and public health in this situation? Share your thoughts in the comments below!
