Third child dies in Colorado from influenza-associated illness during respiratory disease season

The Colorado Department of Public Health and Environment has confirmed that a third child has died in Colorado from an influenza-associated illness so far for the 2025-2026 respiratory disease season. 

According to the CDPHE, the first child death from the flu in the state happened in early December 2025. That child was elementary-school-aged.

The second death was a child who was a high-school-aged student from outside the Denver metro area. 

The third case was a child under the age of five from outside the Denver metro area. 

According to the CDPHE, 29.2% of Colorado residents have received a flu immunization since August 2025.