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Respiratory Illnesses Data Channel

This site is updated on Fridays. New data will be added throughout the fall.

What to know

  • As of November 15, 2024, the amount of acute respiratory illness causing people to seek healthcare is low nationally.
  • COVID-19 activity is stable or declining in most areas. Seasonal influenza activity remains low nationally.
  • RSV activity is elevated and continues to increase in the southern and eastern United States, particularly in young children.
  • Respiratory infections caused by the bacterium Mycoplasma pneumoniae have continued to increase in young children in the United States.
Respiratory illness causing people to seek healthcare is low.

Your community snapshot

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Select your state / territory and your county to receive information on COVID-19, flu, and RSV in your community

The CDC may not have data for all states, counties, or territories. Read more »

Overall respiratory illness activity

What it is: A measure of how frequently a wide variety of respiratory symptoms and conditions are diagnosed by emergency department doctors, ranging from the common cold to COVID-19, flu, and RSV.

Why it matters: Summarizes the total impact of respiratory illnesses, regardless of which diseases are causing people to get sick.

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* Overall respiratory illness activity is displayed at the state or territory level, local data is unavailable at this time.

Wastewater viral activity level
COVID-19
Flu†
RSV

What it is: A measure of how much virus is present in sewage.

Why it matters: People who are infected often shed virus into wastewater, even if they don’t have symptoms. As a result, high wastewater levels may indicate an increased level of infections even when other measures remain low.

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* Wastewater data is displayed at the state or territory level, local data is unavailable at this time.

† Flu levels are for Influenza A only.

Emergency department visits
COVID-19
Flu
RSV

What it is: A measure of how many people are seeking medical care in emergency departments.

Why it matters: When levels are high, it may indicate that infections are making people sick enough to require treatment.

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Learn about this measurement »

* Emergency department data may cover an entire state or Health Service Area. Each Health Service Area includes one or more counties.

* Data is displayed at the state or territory level.

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Weekly national summary

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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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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.

Weekly trends in COVID-19-related and overall hospital bed occupancy.

Stay up to date with the NCIRD bulletin

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