San Antonio Measles Outbreak Puts U.S. Status at Risk

Families participating in a measles vaccination campaign in San Antonio.

San Antonio, December 17, 2025

Health experts warn that the U.S. may lose its measles elimination status due to a resurgence of cases, primarily linked to outbreaks in Texas. The CDC reports nearly 2,000 cases, the highest in decades, with declining vaccination rates contributing to the crisis. Public health officials are urging increased vaccination efforts and awareness campaigns as the WHO will decide on the U.S. status in early 2026.

San Antonio, Texas: Measles Outbreak Threatens U.S. Elimination Status

San Antonio, Texas – Health experts have raised alarms that the United States may soon lose its measles elimination status after 25 years, following a significant resurgence of the disease.

Current Situation

As of December 2025, the U.S. has reported nearly 2,000 measles cases, marking the highest number in over three decades. The majority of these cases are linked to outbreaks in Texas, Arizona, and Utah. In Texas alone, a major outbreak that began in January 2025 resulted in nearly 900 infections, contributing to the national surge. The Centers for Disease Control and Prevention (CDC) has confirmed 47 outbreaks this year, compared to 16 in 2024. Three deaths have been reported, including two children in Texas.

Impact on Measles Elimination Status

The United States achieved measles elimination status in 2000, defined by the absence of continuous transmission for 12 months. However, the current outbreaks have raised concerns about maintaining this status. The Pan American Health Organization (PAHO) has indicated that the U.S. is at risk of losing its measles-free designation, similar to Canada, which lost its status in November 2025 due to a prolonged outbreak.

Contributing Factors

Declining vaccination rates have been a significant factor in the resurgence of measles. In Texas, vaccination rates among kindergartners have fallen below the recommended 95% threshold, with only 77% vaccinated. Nationwide, MMR vaccination rates have declined from 95.2% in 2019–2020 to 92.7% in 2023–2024.

Public Health Response

Health officials are urging increased vaccination efforts and public awareness campaigns to control the spread of measles. The CDC continues to monitor the situation and provide guidance to state and local health departments. The World Health Organization (WHO) is expected to make a determination in January 2026 regarding the U.S. measles elimination status.

Background

Measles is a highly contagious viral disease that can lead to severe complications, including pneumonia, encephalitis, and death. The MMR vaccine is highly effective, providing 97% protection after two doses. Maintaining high vaccination coverage is crucial to prevent outbreaks and protect public health.

Frequently Asked Questions (FAQ)

What is measles elimination status?

Measles elimination status means that a country has interrupted endemic transmission of the disease for at least 12 consecutive months.

Why is the U.S. at risk of losing its measles elimination status?

The U.S. is at risk due to a significant increase in measles cases, with nearly 2,000 reported in 2025, and declining vaccination rates among children.

What are the consequences of losing measles elimination status?

Losing measles elimination status can lead to increased outbreaks, greater pressure on health systems, and reversal of public health gains.

How can measles outbreaks be prevented?

Measles outbreaks can be prevented through high vaccination coverage, with at least 95% of the population vaccinated to achieve herd immunity.

What is the current vaccination rate in the U.S.?

As of 2023–2024, the MMR vaccination rate for kindergarteners in the U.S. is 92.7%, below the recommended 95% threshold.

Key Features of the Measles Outbreak in the U.S.

Feature Details
Number of Cases Nearly 2,000 reported in 2025, the highest in over three decades.
Major Outbreaks Significant outbreaks in Texas, Arizona, and Utah.
Vaccination Rates Declining rates, with only 77% of kindergartners vaccinated in Texas.
Elimination Status U.S. at risk of losing measles-free designation; WHO to decide in January 2026.
Public Health Response Increased vaccination efforts and public awareness campaigns underway.


Deeper Dive: News & Info About This Topic

HERE Resources

San Antonio Launches Free Drive-Thru Flu Vaccination Events
Conflict Within Texas Capitol Amid Rising Tensions
Senate Confirms New CDC Director Amid Controversy
Texas Community Reflects on Autism Awareness Amid Tragedies
San Antonio Investigates Death of Man Found in Street
First Measles Case Confirmed in Bexar County Since 2019
University Hosts Autism Awareness Event in Laredo
HHS Secretary Dismisses Vaccine Advisory Panel
Texas Clinics Halt Free STI Testing Amid Funding Crisis
Lubbock Gears Up for a Funky Business Fiesta

STAFF HERE SAN ANTONIO WRITER
Author: STAFF HERE SAN ANTONIO WRITER

The SAN ANTONIO STAFF WRITER represents the experienced team at HERESanAntonio.com, your go-to source for actionable local news and information in San Antonio, Bexar County, and beyond. Specializing in "news you can use," we cover essential topics like product reviews for personal and business needs, local business directories, politics, real estate trends, neighborhood insights, and state news affecting the area—with deep expertise drawn from years of dedicated reporting and strong community input, including local press releases and business updates. We deliver top reporting on high-value events such as Fiesta San Antonio, San Antonio Stock Show & Rodeo, and Dia de los Muertos. Our coverage extends to key organizations like the Greater San Antonio Chamber of Commerce and United Way of San Antonio and Bexar County, plus leading businesses in retail, insurance, and energy that power the local economy such as H-E-B, USAA, and Valero Energy. As part of the broader HERE network, including HEREAustinTX.com, HERECollegeStation.com, HEREDallas.com, and HEREHouston.com, we provide comprehensive, credible insights into Texas's dynamic landscape.

ADD MORE INFORMATION OR CONTRIBUTE TO OUR ARTICLE CLICK HERE!
Advertising Opportunity:

Stay Connected

More Updates

Would You Like To Add Your Business?

Sign Up Now and get your local business listed!