[REVISION HISTORY]

Rising influenza activity in the United States

2 recorded revisions of this situation.

What changed

2026-11-01 14:50 UTC → 2026-11-10 06:48 UTC · added ~~removed~~

Influenza activity has shown an upward trend across the United States during late 2026. In Colorado, state health officials reported a steep increase in indicators such as percent positivity, emergency department visits, and hospitalizations, with weekly flu hospitalizations rising from one in late August to 46 in mid-October. On a national level, the CDC reported that influenza activity is increasing earlier than usual. While overall seasonal activity remains low, surveillance indicators including outpatient visits for influenza-like illness and laboratory-confirmed hospitalizations have been trending upward since late August. Louisiana was identified as one of the first states to report moderate flu activity. By the week ending October 24, the CDC noted that the estimated hospitalization rate for mid-October reached its highest level since 2010. Hospitals reported 6,100 laboratory-confirmed flu admissions, representing a 27% increase from the previous week. Clinical laboratories reported a positivity rate of 7.6%, up from 5.7% the prior week. While the West Coast initially saw the highest activity, the virus has since spread more ~~widely. Rising~~ widely, with rising admission rates ~~have been~~ noted in New England, the Southeast, and the Pacific ~~Northwest,~~ Northwest. In early November, New York reported a significant surge, with ~~Hawaii also reporting moderate levels~~ cases increasing 77% in a single week to reach 7,696. Flu-related hospitalizations in the state rose by 105%, totaling 1,426 for the season. State Health Commissioner Dr. James McDonald noted that activity in Monroe County began roughly a month earlier than in previous years, with over 4,000 cases involving individuals under the age of ~~infection.~~ 17.

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