Florida Swine Flu Deaths: Latest CDC Data & Updates

According to the CDC FluView surveillance data for the 2022-2023 influenza season (week 40, 2022 through week 20, 2023), Florida reported 159 deaths attributed to influenza A(H1N1)pdm09 (the "swine flu" strain from the 2009 pandemic, now a seasonal strain).

Important Context

• Undercount: This reflects only deaths with influenza listed on the death certificate and reported to CDC. Actual influenza-associated mortality is estimated 2-5x higher using statistical models.
• Seasonal variation: 2022-2023 was a moderately severe season with early peak (November-December).
• Dominant strains: A(H3N2) and A(H1N1)pdm09 co-circulated; B/Victoria also present.
• High-risk groups: Adults ≥65, children <5, pregnant women, chronic conditions (asthma, diabetes, heart/lung disease), immunocompromised.

Prevention & Treatment

• Annual vaccination: Best protection; reduces severity even if breakthrough infection occurs.
• Antivirals (oseltamivir, baloxavir, zanamivir): Most effective if started ≤48h of symptom onset; recommended for high-risk/outpatient and all hospitalized patients.
• Non-pharmaceutical: Hand hygiene, masking when sick, staying home, ventilation.

Data Sources

• CDC FluView Interactive: State-level mortality
• Florida Department of Health: Weekly Flu Review

Note: "Swine flu" is an outdated term for A(H1N1)pdm09, which has circulated seasonally since 2009. It is not a distinct threat from other seasonal influenza A strains.