No results, please enter a search term above
Philadelphia Seasonal Influenza Activity (last updated 3/22/21)
*Different surveillance systems are maintained for influenza. Only a subset of laboratories report positive influenza results.
**Reports not limited to facilities who participate in laboratory testing.
Latest Updates: Influenza activity is currently characterized as LOW in Pennsylvania (influenza outbreaks or increases in influenza-like illness cases or laboratory-confirmed influenza in at least half of a state's regions.)
|Date of Alert|
|No Health Alerts Found|
|Updated Guidance about COVID-19 and Influenza Vaccines||Advisory||Dec 7, 2021|
|Elevated Influenza Activity: Influenza B/Victoria and A(H1N1)pdm09 Viruses are the Predominant Viruses||Advisory||Jan 10, 2020|
|Influenza Activity is Elevated in Philadelphia: Clinical Reminders for the 2018–2019 Season||Advisory||Feb 4, 2019|
|Influenza Transmission High in Philadelphia: Public Health Recommendations to Limit Transmission||Advisory||Feb 1, 2018|
|Increasing Influenza Activity in Philadelphia: Clinical Reminders for the 2017–2018 Season||Advisory||Jan 12, 2018|
It is very difficult to distinguish flu from other viral or bacterial respiratory illnesses based on symptoms alone. There are tests available to diagnose flu. More information is available: Diagnosing Flu.
The following influenza cases need to be reported to the Philadelphia Department of Public Health (PDPH)
Long Term Care Facilities