Early flu season prompts Colorado officials to urge vaccination now

Colorado flu season started early this year.

The Colorado Department of Public Health and Environment confirmed the first pediatric influenza-associated death of the 2026-27 season in early October. The victim was an elementary-aged child. This development prompted health officials to urge residents to take action immediately. State Epidemiologist Rachel Herlihy noted that flu activity is increasing across the country. She said Colorado is seeing cases earlier than in the previous year.

Herlihy pointed to data from the 2025-26 season to explain the current urgency. That period marked the worst influenza season in Colorado since tracking began in 2004. The state recorded its highest pediatric hospitalization rates during that time. There were also more child deaths from the flu than any season since the 2009 H1n1 pandemic. Herlihy described last year as a notable season, particularly for the pediatric population. The current early start follows that severe backdrop.

Vaccination numbers in Colorado have grown this year. Herlihy stated that one million residents have received the flu vaccine. She noted that the state is ahead of the percentages recorded in both last year and the year before. The vaccine is available to anyone six months and older. It offers protection to those at higher risk of serious illness, including children, pregnant people, and individuals with underlying health conditions. Herlihy encouraged Coloradans to get vaccinated soon to maintain that progress.

Community members and healthcare providers are responding to the early season. Christopher Leo described vaccination as a way to look out for one another. He said protecting each other is essential when social circles gather closely during the holidays. Pharmacists are also observing a change in behavior. Steve Musielak of CVS reported a sharp rise in patients coming in for shots over the last week or two. He noted that the vaccine takes up to two weeks to reach full effect.

Musielak advised anyone undecided to get vaccinated now. He emphasized that yearly vaccination is key while the virus is circulating. The current timing allows residents to build immunity before holiday gatherings. State and local health officials will continue to monitor flu activity through the winter months. Residents can receive the shot at pharmacies, clinics, and doctor offices across the Denver metro area.