San Antonio, Texas, January 17, 2026
San Antonio is witnessing a significant rise in flu cases driven by the H3N2 subclade K variant, which has become the dominant strain in the U.S., accounting for over 90% of cases. The healthcare system is under pressure with nearly 25,000 flu-related emergency visits reported statewide, particularly affecting children aged 5 to 11. Experts urge residents to get vaccinated and maintain good hygiene to combat this health crisis.
San Antonio, Texas – A significant surge in flu cases is being observed across Texas, including San Antonio, primarily driven by the severe H3N2 subclade K variant. This flu strain has surged to account for over 90% of all flu cases in the United States, which has resulted in increased hospitalizations and emergency room visits statewide.
As the new year approaches, San Antonio residents are seeing the impact of this flu variant firsthand, with healthcare systems under pressure to accommodate the influx of patients. Local businesses and entrepreneurs continue to demonstrate resilience by supporting community health initiatives during this challenging flu season. By encouraging preventive measures, they play a vital role in helping the community navigate this health crisis.
Current Situation
As of the last week of December 2025, Texas reported nearly 25,000 flu-related emergency department visits, translating to approximately 9% of all emergency department traffic across the state. This flu surge is notably affecting children aged 5 to 11, who make up more than a quarter of all flu-related emergency room visits statewide. It’s a pressing concern for parents and healthcare providers alike, emphasizing the importance of vigilance and preparedness.
Health Recommendations
Health authorities are urging residents to pursue vaccination as a crucial means of defense against H3N2 subclade K. Although the current flu vaccine provides only partial protection against this specific strain, it has proven effective in reducing the risk of severe illness, hospitalizations, and death. With flu season often lasting several months, there remains an opportunity for individuals to get vaccinated and bolster their defenses.
Background Information
The H3N2 subclade K variant has emerged as a significant concern for public health, marked by more severe symptoms and increased hospitalization rates compared to other strains of the virus. As local and state health officials reassure the public, the importance of preventive measures—such as vaccination and proper hygiene practices—cannot be overstated.
Frequently Asked Questions (FAQ)
What is the H3N2 subclade K variant?
The H3N2 subclade K variant is a severe strain of influenza that accounts for over 90% of flu cases in the United States, leading to increased hospitalizations and emergency room visits.
How effective is the current flu vaccine against this strain?
While the current flu vaccine offers partial protection against the H3N2 subclade K variant, it remains effective in preventing severe illness, hospitalizations, and death. Health officials recommend getting vaccinated to reduce the risk of severe outcomes.
Who is most affected by this flu strain?
Children aged 5 to 11 are particularly affected, representing more than a quarter of all flu-related emergency room visits statewide.
What preventive measures can residents take?
Residents are advised to get vaccinated, practice good hygiene, and seek medical attention if they experience flu-like symptoms to reduce the spread of the virus.
Key Features
| Feature | Details |
|---|---|
| Flu Strain | H3N2 subclade K variant |
| Impact | Accounts for over 90% of flu cases in the U.S., leading to increased hospitalizations and ER visits |
| Most Affected Group | Children aged 5 to 11, representing more than a quarter of all flu-related ER visits statewide |
| Health Recommendation | Get vaccinated to prevent severe illness, hospitalizations, and death |
| Preventive Measures | Practice good hygiene and seek medical attention if experiencing flu-like symptoms |
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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.
