Respiratory Trend Report

Week ending January 4th, 2025

Respiratory Trend Report

Week ending January 4th, 2025

Follow along with us this respiratory season for updates every two weeks.

Key Takeaways

  • Influenza virus A, B positivity has continued to rapidly increase, rising above 15% during the last two weeks.

  • Respiratory syncytial virus positivity has plateaued, maintaining a positivity of 11.4% during the previous two weeks.
  • The seasonal coronavirus, Coronaviruses (229E, NL63, HKU1, and OC43), have been steadily growing, reaching 8.9% positivity last week.

HealthTrackRx Trend Update

Positivity rates for many viruses plateaued during the week of December 30th, 2024. This may reflect changes in utilization of healthcare rather than true plateaus in respiratory virus circulation patterns.

Current RSV positivity rates are higher than were observed during any point in the 2023-2024 respiratory season, while influenza virus positivity rates are currently similar to the 2023-2024 peak. If this season is similar to last year, RSV positivity rates will begin to decrease in the coming weeks.

COVID-19 Coronavirus (SARS-CoV-2) and Human Metapneumovirus seems like they may be slowly starting to increase. We will continue to monitor these two viruses as respiratory season continues.

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Trending Up

  • COVID-19 Coronavirus (SARS-CoV-2)
  • Human metapneumovirus

Trending Down

  • Rhinovirus/Enterovirus
  • Parainfluenza virus (types 1, 2, 3, 4)
  • Enterovirus D68

  • Mycoplasma pneumoniae

Remaining Level

  • Respiratory syncytial virus (RSV)
  • Influenza virus A, B

  • Coronavirus (229E, NL63, OC43, and HKU1)

  • Adenovirus

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Positives per 1000 tests for Influenza virus A, B from 12/22/2024 to 01/04/2025

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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