Houston’s 2025-2026 flu season is shaping up to be among the most severe in recent years, with local health authorities reporting that flu cases are doubling every week, well ahead of the holiday season. Driven largely by a strong early surge of influenza A—the more severe and contagious strain—this uptick began in mid-October and has put the city’s clinics and hospitals on alert for escalating illness and hospital admissions as winter progresses.​

Experts at Houston Methodist warn that the jump from 274 cases in early November to more than 500 in a single week is just the beginning, with numbers expected to climb well into the new year. While the flu season traditionally spans from October to April, this year’s spike started sooner than usual, and doctors caution that Houston’s unseasonably warm weather is not slowing viral transmission. Medical professionals say the predominant influenza A strain often results in more severe symptoms, especially for high-risk groups including children, seniors, and immunocompromised individuals.​

Harris County’s health department has also confirmed a greater-than-average number of flu and pneumonia-related hospitalizations, and Texas has already recorded over 900 deaths linked to respiratory viruses in the 2025 season alone. Five pediatric flu fatalities have been documented statewide, underscoring the seriousness of this year’s outbreak; fortunately, none of those deaths have occurred within Houston city limits so far.​

While COVID-19 cases are currently low, viral transmission of other respiratory illnesses—including RSV and the common cold—is on the rise, keeping hospitals vigilant and urging the public to take extra precautions. Health authorities emphasize standard measures: get the annual flu vaccine, wash hands frequently, cover sneezes, and stay home when ill to break chains of transmission. Updated flu shots are widely available at grocery stores, clinics, and pharmacies—including drive-through and pop-up options for immediate vaccination.​

Houston’s public health leaders, including Dr. Wesley Long of Houston Methodist and Dr. Ericka Brown of Harris County Public Health, agree that the severity of the season can’t yet be predicted with certainty, but everyone should take the threat seriously. “It’s easier to see in hindsight,” Dr. Long notes, “but what I can say for certain is that we are seeing cases increase right now”.​

Houston’s flu surge is a reminder that even as the community recovers from the pandemic and life returns to normal, annual respiratory viruses require vigilance and proactive protection. As the winter holidays approach, public health experts urge Houstonians to get vaccinated, keep sick kids home from school, and maintain robust hygiene to help stem this season’s sharp upward flu trend.