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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|
|Guidance for Clinicians on Human Infections with Variant Influenza Viruses||Alert||Aug 15, 2023|
|Testing for Influenza in Persons with Severe Respiratory Illness||Advisory||Jun 23, 2023|
|Interim Guidance for Clinicians to Prioritize Antiviral Treatment of Influenza in the Setting of Reduced Availability of Oseltamivir||Advisory||Dec 15, 2022|
|Increased Need for Outpatient Pediatric Sick Appointments||Advisory||Nov 9, 2022|
|Use of Palivizumab to Prevent Hospitalization from Severe RSV Infection During 2022-23 Season||Update||Nov 1, 2022|
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