RSV State Trends

Updated May 31, 2023

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Participating laboratories report weekly to CDC the total number or RSV tests performed that week, and the number of those tests that were positive. Because reporting delays may be expected for some laboratories, data shown for the most recent weeks, in particular the most recent two weeks, may be less complete than others. Each point on the trend graphs below displays the average number of RSV tests that were performed, and the average percent of those that were positive from three adjacent weeks: the specified week, and the weeks preceding and following it. This is also known as a centered 3-week moving average. The RSV detection graphs below display the 5 week moving average (average of the 4 previous and current weeks) in accordance with the recommendations for assessing RSV trends by detections.

State-level trends are only displayed when two or more labs report RSV testing data for at least 36 of the prior 52 weeks presented by diagnostic method. If data for a state are too sparse to display during a particular week, we recommend viewing the trends at the HHS Region or Census Division level that contains the state of interest.

In the United States, annual community outbreaks of RSV infections typically occur during late fall, winter, and early spring. There may be variation in the timing of outbreaks between regions and between communities in the same region.

Click on the map below to display RSV circulation in each state.

National U.S. Image Map, RSV State Trend Selector Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming Delaware Maryland Washington, D.C. New Hampshire New Jersey Massachusetts Connecticut West Virginia Vermont Rhode Island
About HHS Regions

Total Antigen Tests

The gray line and gray bars indicate weeks when the data may be less complete.

Total PCR Tests

The gray line and gray bars indicate weeks when the data may be less complete.


The gray line and gray bars indicate weeks when the data may be less complete.