US Measles Cases Surge: Highest in 30 Years – 2026 Update

US Measles Cases Surge: Highest in 30 Years – 2026 Update

February 21, 2026 discoverhiddenusacom Health

The United States is confronting a concerning resurgence of measles, with case numbers reaching levels not seen in over three decades. Throughout 2025, the Centers for Disease Control and Prevention (CDC) reported more than 2,000 confirmed cases, marking the highest annual total since 1992. This upward trend has continued into early 2026, raising serious concerns among public health officials.

Widespread Outbreaks and Alarming Numbers

Federal data indicates that, as of December 30, 2025, 2,065 measles cases had been recorded across 44 jurisdictions in the United States. This figure nears the national record of 2,126 cases set in 1992. The increase in infections has been accompanied by significant health consequences, with approximately 11 percent of patients requiring hospitalization. Tragically, three measles-related deaths were confirmed during 2025.

Did You Know? The United States was declared to have eliminated measles in 2000, meaning sustained transmission within the country had stopped.

The most substantial current outbreak is centered in South Carolina, described as the largest since measles elimination was declared in the U.S. In the early 2000s. As of January 30, 2026, South Carolina has reported 789 cases, surpassing a major outbreak in West Texas that peaked at 762 cases in 2025. The South Carolina Department of Public Health has labeled this outbreak the worst in the state in over 30 years, with Spartanburg County as a central point of transmission. Cases in North Carolina, Washington and California have also been linked to the South Carolina outbreak. Virginia reported eight cases in 2026, primarily in Northern Virginia, including one adult case potentially linked to international travel.

Key Drivers: Declining Vaccination Rates and Public Hesitancy

The dramatic rise in measles cases is largely attributed to decreasing vaccination coverage and growing public skepticism towards immunization. Data shows that 93 percent of measles cases in 2025 occurred in individuals who were unvaccinated or whose vaccination status was unknown. Coverage with the MMR (measles, mumps, rubella) vaccine among preschool children reportedly declined from 95.2 percent to 92.7 percent since the 2019-2020 school year.

Expert Insight: The resurgence of measles underscores the critical importance of maintaining high vaccination rates to protect both individual and community health. Declining coverage creates vulnerabilities that allow this highly contagious virus to regain a foothold.

Dr. Marc Siegel, a senior health analyst at Fox News, stated on March 1, 2025, that measles is “the most contagious respiratory virus on Planet Earth” and that outbreaks are occurring due to low vaccination rates. Figures like Robert F. Kennedy Jr., known for vaccine skepticism, have also been cited as potentially contributing to the crisis by fueling concerns about immunization. International travel is also a significant risk factor in the reintroduction and spread of the virus.

Threat to Elimination Status and Global Warnings

The United States previously achieved measles elimination in 2000, meaning domestic transmission was interrupted and new cases generally originated abroad. However, the surge in cases and widespread outbreaks throughout 2025 have prompted warnings from public health experts that the U.S. Could soon lose its elimination status, similar to what Canada experienced in November 2025.

The Pan American Health Organization (PAHO) issued a warning to member countries in early February 2026 to strengthen “routine surveillance and vaccination activities” for measles. Health authorities also remind the public that measles is highly contagious, with one infected person potentially spreading the virus to dozens of others who lack immunity.

Frequently Asked Questions

What is measles?

Measles is a highly contagious respiratory virus that can cause fever, rash, cough, runny nose, and red, watery eyes. It can lead to serious complications, including pneumonia, encephalitis (brain swelling), and even death.

How is measles spread?

Measles is spread through the air when an infected person coughs or sneezes. It’s so contagious that if one person has it, up to 90% of those around them who are not immune will become infected.

What can be done to prevent measles?

The most effective way to prevent measles is through vaccination with the MMR (measles, mumps, rubella) vaccine. Two doses of the vaccine are recommended for children and adults.

As vaccination rates fluctuate and international travel continues, will the United States be able to regain and maintain its measles elimination status, and what steps might be necessary to achieve this goal?