The current flu season has seen the highest rate of doctor’s visits for flu-like symptoms since the US began collecting data through a national surveillance network. CNN is tracking these case rates ...

Colorado is in the midst of a record-breaking flu season. In the week ending Dec. 27, 2025, 831 people were hospitalized with influenza – the most since the state started tracking flu cases two ...

Colorado is experiencing one of its roughest flu seasons in recent years, with hospitalizations climbing sharply across the state, especially among children. Dr. Shen Nagel, a pediatrician with ...

Doctors are alarmed as H3N2 influenza cases surge earlier than typical seasonal peaks, driven by erratic weather, transitional immunity gaps, and environmental triggers.