National Emergency Department Visits for COVID-19, Influenza, and Respiratory Syncytial Virus

Charts and data provided by CDC, updates Wednesday by 8am. For the past year, using a rolling 52-week period.

This site provides a combined view of emergency department visit data for multiple respiratory conditions as tracked by the National Syndromic Surveillance Program (NSSP). NSSP is a collaboration among CDC, federal partners, state and local health departments, and academic and private sector partners to collect, analyze, and share electronic data received from multiple health care settings. Data are monitored for a subset of emergency departments across the United States. Additional data and features are forthcoming.

Weekly Emergency Department Visits by Age Group

Note, to view a specific respiratory illness, select it within the legend.

*The “Combined” category is created by adding emergency department patient visits with diagnosed COVID-19 to those visits with diagnosed influenza and those visits with diagnosed Respiratory Syncytial Virus (RSV) for the given week.

For more detailed information on these data please see the Companion Guide: NSSP Emergency Department Data on Respiratory Illness.

Weekly Emergency Department Visits by Age Group and Respiratory Illness, as a Percent of All Emergency Department Visits

Note, to view a specific age group, select it within the legend.

Findings for each respiratory virus type are presented individually and combined for all three as a percent of total emergency department visits. Additional information available at the Companion Guide: NSSP Emergency Department Data on Respiratory Illness.

For more detailed information on these data please see the Companion Guide: NSSP Emergency Department Data on Respiratory Illness.

Weekly Emergency Department Visits by Viral Respiratory Illness Type and State, as a Percent of All Emergency Department Visits

Findings for each respiratory virus type are presented individually and combined for all three as a percent of total emergency department visits. Additional information, including on participating states and jurisdictions, available at the Companion Guide: NSSP Emergency Department Data on Respiratory Illness.