Health Information Portal (HIP)

Philadelphia Influenza Surveillance Updates: PDPH tracks influenza activity in Philadelphia, especially severe influenza disease. Providers should report all hospitalized influenza cases, influenza deaths in children, and influenza outbreaks in closed settings like long-term care facilities and shelters.

Week 43: During week 43, influenza diagnoses at local emergency departments remained low for all ages. Detections for influenza A and influenza B at select local hospital laboratories remained low during week 43, consistent with the past several weeks. No influenza outbreaks in long-term care facilities have been reported or confirmed (≥ 1 case of laboratory confirmed flu reported in a long-term care facility) during the 2025-2026 season to date.

Week 43 Report: Click here to download the latest weekly report of influenza activity (October 19, 2025-October 25, 2025) in a printable format.

State and National Influenza Surveillance Updates:

Pennsylvania: As of October 25, 2025, the Pennsylvania Department of Health (PADOH) respiratory virus summaries have resumed for the 2025-2026 season. Influenza activity is currently listed as very low. Activity levels in PA are based on laboratory confirmed influenza cases. For more information, please visit: https://www.pa.gov/agencies/health/diseases-conditions/infectious-disease/respiratory-viruses/respiratory-virus-dashboard.

United States: National influenza activity updates from the CDC are last available for week 38. For the latest information, please visit: https://www.cdc.gov/fluview/surveillance/2025-week-38.html.