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 49: Influenza diagnoses at local emergency departments remained low but increased significantly for adults during week 49. Positive detections of influenza A and B at select local hospital laboratories both remained low but increased slightly. One influenza outbreak has been reported and confirmed (≥ 1 case of laboratory confirmed flu reported in a long-term care facility) so far this season.

Current Report: Click here to download the last weekly report of influenza activity (December 1, 2024 through December 7, 2024) in a printable format.

State and National Influenza Surveillance Updates:

Pennsylvania: As of December 7, 2024 the Pennsylvania Department of Health (PADOH) reported that influenza A and B activity is low but increasing. PADOH has resumed weekly summaries for trends related to Influenza, RSV, and COVID-19. For more information, please visit: https://www.health.pa.gov/topics/disease/Flu/Pages/2023-24-Flu.aspx

United States: As of December 7, 2024, the CDC reports that influenza activity is continuing to increase, but overall remains low nationally. In week 49, clinical laboratories reported 4,151 specimens (5.1%) of 81,992 specimens tested positive for influenza, 94.5% of which were influenza A. Of influenza A specimens subtyped at public health labs, 39.2% have been subtyped as H1N1 and 60.8% as H3N2. In week 49, nine jurisdictions reported moderate to high levels of influenza activity. All other jurisdictions reported low to minimal activity . Of note, two human infections of influenza A (H3N2) variant viruses were recently reported by the Minnesota Department of Health. For more information, please visit: https://www.cdc.gov/flu/weekly/?web=1&wdLOR=c71BAB5AB-9284-416F-B9D9-70F93738A077