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

The positivity rate of influenza virus has turned the corner. We’ve begun to see decreases in national positivity rates for influenza virus. This is mostly driven by decreases in cases of influenza A virus. Positivity rates for influenza B virus have slowly been increasing in recent weeks. Note that CDC data for influenza virus positivity also includes antigen testing, contributing to the larger peak observed in their reporting.

In the 2023-2024 respiratory season, a spike in COVID-19 infections was observed alongside the peak of influenza virus. This year we have yet to observe any notable increases in the prevalence of COVID-19 infections, suggesting that the seasonality of COVID-19 may be more complex than the two annual peaks that we’ve observed in recent years.

We are continuing to see the seasonal Coronaviruses (229E, NL63, OC43, and HKU1) and human metapneumovirus creep upwards, which are two viruses more commonly observed in the late winter or early spring. The seasonal coronavirus positivity rate is currently higher than what was observed at any point during the 2023-2024 respiratory season.

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.