Respiratory Illnesses Data Channel

This site is updated on Fridays.

What to know

  • As of December 30, 2025, the amount of acute respiratory illness causing people to seek health care is at a high level for the first time in the current 2025-2026 season.
  • Seasonal influenza activity is elevated and continues to increase across the country.
  • RSV activity is elevated in many areas of the country with emergency department visits and hospitalizations increasing among children 0-4 years old.
  • COVID-19 activity is low but increasing nationally.
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Your community snapshot

Weekly national summary

Season Outlook

CDC continues to expect that the fall and winter respiratory disease season in the United States will likely have a similar number of combined peak hospitalizations due to COVID-19, influenza, and RSV compared to last season. Read more: 2025-2026 Respiratory Disease Season Outlook - December Update | CDC

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Continue exploring these data

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Respiratory Virus Activity Levels
Updates on how COVID-19, Flu, and RSV may be spreading nationally and in your state
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Severe Viral Respiratory Illness
Data on how respiratory viruses are contributing to serious health outcomes
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People Most Impacted by Respiratory Viruses
How people of different ages, race and ethnicity, and sex are affected by COVID-19, flu, and RSV.
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Other Respiratory Illnesses Going Around
This page details respiratory illnesses from viruses and bacteria other than COVID-19, flu, and RSV
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Vaccination Trends
Vaccination uptake & intent for COVID, flu, and RSV

Explore related data

Anticipated trends for COVID-19 infections, based on modeling, are displayed at the national and state levels.

Wastewater (sewage) data specific to SARS-CoV-2, the virus that causes COVID-19, are displayed at the national, regional, and state levels. These data can provide an early signal of changes in infection levels.

COVID-19 variants and genomic surveillance data are displayed for the nation.

Weekly trends in overall hospital bed occupancy and reporting status.

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Content Source:
National Center for Immunization and Respiratory Diseases (NCIRD)