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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
|Urgent CDC Recommendations on Immunizations and Therapeutics Given Increased Respiratory Disease Activity
|Dec 27, 2023
|Guidance for Clinicians on Human Infections with Variant Influenza Viruses
|Aug 15, 2023
|Testing for Influenza in Persons with Severe Respiratory Illness
|Jun 23, 2023
|Interim Guidance for Clinicians to Prioritize Antiviral Treatment of Influenza in the Setting of Reduced Availability of Oseltamivir
|Dec 15, 2022
|Increased Need for Outpatient Pediatric Sick Appointments
|Nov 9, 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