Measles Outbreaks Across US Raise Concerns Over Endemic Status
The United States has seen a significant surge in measles cases over the past year, with 2,242 confirmed cases reported in 2025 – the highest number since 1991. The Centers for Disease Control and Prevention (CDC) recorded 49 outbreaks during this period, sparking concerns that the country may be on the cusp of losing its status as a measles-free nation.
The World Health Organization (WHO) considers measles to be endemic if the virus is continuously transmitted in a given region or community for at least a year. The CDC had maintained the US's measles elimination status since 2000, but with over 5,000 cases reported globally and thousands more in the US, some experts argue that it may be time to reevaluate this designation.
South Carolina has emerged as the epicenter of the country's measles problem, with 646 confirmed cases recorded since October. The state health department attributes the outbreak to declining vaccination rates and a lack of public awareness about the risks associated with measles.
The CDC's principal deputy director, Dr. Ralph Abraham, downplayed concerns over the US losing its elimination status, stating that "not really" and emphasizing personal freedom as a key factor in vaccine uptake. However, some experts disagree, arguing that the virus is already out of control in the US due to declining vaccination rates.
A recent study published in JAMA found that nearly 60% of US counties are seeing an increase in vaccine exemptions for religious or personal beliefs among children entering kindergarten. The CDC's response to this trend has been criticized, with some officials citing misinformation about vaccines as a contributing factor to declining vaccination rates.
The World Health Organization is set to review the US's measles elimination status later this year, and experts warn that if the country fails to increase its vaccination rates, it may be forced to reevaluate its designation.
The United States has seen a significant surge in measles cases over the past year, with 2,242 confirmed cases reported in 2025 – the highest number since 1991. The Centers for Disease Control and Prevention (CDC) recorded 49 outbreaks during this period, sparking concerns that the country may be on the cusp of losing its status as a measles-free nation.
The World Health Organization (WHO) considers measles to be endemic if the virus is continuously transmitted in a given region or community for at least a year. The CDC had maintained the US's measles elimination status since 2000, but with over 5,000 cases reported globally and thousands more in the US, some experts argue that it may be time to reevaluate this designation.
South Carolina has emerged as the epicenter of the country's measles problem, with 646 confirmed cases recorded since October. The state health department attributes the outbreak to declining vaccination rates and a lack of public awareness about the risks associated with measles.
The CDC's principal deputy director, Dr. Ralph Abraham, downplayed concerns over the US losing its elimination status, stating that "not really" and emphasizing personal freedom as a key factor in vaccine uptake. However, some experts disagree, arguing that the virus is already out of control in the US due to declining vaccination rates.
A recent study published in JAMA found that nearly 60% of US counties are seeing an increase in vaccine exemptions for religious or personal beliefs among children entering kindergarten. The CDC's response to this trend has been criticized, with some officials citing misinformation about vaccines as a contributing factor to declining vaccination rates.
The World Health Organization is set to review the US's measles elimination status later this year, and experts warn that if the country fails to increase its vaccination rates, it may be forced to reevaluate its designation.