Respiratory Trend Report
Week ending October 26th, 2025
HealthTrackRx
Trend Update
Respiratory virus activity is beginning to show seasonal shifts across the U.S. While Rhinovirus/Enterovirus continues to be the most commonly detected virus, its positivity rate continues to decline from its late summer peak at 42.1% in August. Parainfluenza viruses (types 1-4) are slightly decreasing, now at 8.3%, signaling stable infectious rate. Adenovirus detection dipped slightly to 2.3%, while Respiratory Syncytial Virus (RSV) is showing a gradual rise nationally to 1.9%, with significantly higher levels observed in parts of the Southeast – reaching 9.1% in Florida and 3.3% in Alabama. COVID-19 (SARS-CoV-2) continues its post-summer decline, dropping to 1.4%, and Enterovirus D68 slightly decreased to 2.5%. Influenza A and B activity remains low overall now at 0.9% nationally, with Florida reporting the highest positivity rates at 3.2%.
Respiratory Trend Report
Week ending October 26th, 2025
Get Updates
HealthTrackRx
Trend Update
Respiratory virus activity is beginning to show seasonal shifts across the U.S. While Rhinovirus/Enterovirus continues to be the most commonly detected virus, its positivity rate continues to decline from its late summer peak at 42.1% in August. Parainfluenza viruses (types 1-4) are slightly decreasing, now at 8.3%, signaling stable infectious rate. Adenovirus detection dipped slightly to 2.3%, while Respiratory Syncytial Virus (RSV) is showing a gradual rise nationally to 1.9%, with significantly higher levels observed in parts of the Southeast – reaching 9.1% in Florida and 3.3% in Alabama. COVID-19 (SARS-CoV-2) continues its post-summer decline, dropping to 1.4%, and Enterovirus D68 slightly decreased to 2.5%. Influenza A and B activity remains low overall now at 0.9% nationally, with Florida reporting the highest positivity rates at 3.2%.
Infection Trends
Infection Trends
Seasonal Outlook
Seasonal Outlook
Trending Up
Trending Down
Remaining Level
Trending Up
Trending Down
Remaining Level
7-Day Positivity Rate of RSV

This report reflects observed trends in HealthTrackRx testing positivity data, does not convey medical advice, and is provided for informational purposes only. Individuals experiencing respiratory symptoms should consult with their healthcare provider.
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