Respiratory Illnesses Data Channel

This site is updated on Fridays.

What to know

  • As of March 20, 2026, the amount of acute respiratory illness causing people to seek health care is low.
  • RSV activity started later than expected in most regions of the United States, though illness is not more severe compared with recent seasons. This unusual timing means that higher levels of RSV activity may continue into April in many regions. Emergency department visits and hospitalizations for RSV are highest among infants and children less than 4 years old.
  • COVID-19 activity is decreasing in most areas of the country.
  • Overall seasonal influenza activity remains elevated nationally but is decreasing in most areas of the country. Influenza A activity continues to decrease while trends in influenza B activity vary by region.
RI Alert Graphic Low

Your community snapshot

Weekly national summary

Season Outlook

CDC assesses that the season’s highest number of combined peak hospitalizations due to COVID-19, influenza, and RSV to date occurred during the week ending January 3, 2026. This is within 20% of the combined peak number of hospitalizations last season and consistent with the outlook published prior to the beginning of the respiratory disease season. CDC will continue to monitor respiratory diseases and update this outlook if warranted but does not anticipate producing additional outlook updates during the remainder of the 2025-2026 respiratory season. Read more: 2025-2026 Respiratory Disease Season Outlook – March Update | CFA: Qualitative Assessments | 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)