RSV Census Regional Trends

Updated November 30, 2023

« Back to Respiratory Syncytial Virus (RSV) Surveillance

Participating laboratories report weekly to CDC the total number of 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. The trend graphs below display by region the weekly average percent of diagnostic tests positive for RSV among all the diagnostic tests performed to detect RSV, as reported by participating laboratories.

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.

Census Region Image Map, Census Region Selector

Northern: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, and Vermont Midwestern: Illinois, Indiana, Iowa, Michigan, Kansas, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, and Wisconsin Western: Alaska, Arizona, California, Colorado, Hawaii, Idaho, Nevada, New Mexico, Montana, Oregon, Utah, Washington and Wyoming Southern: Alabama, Arkansas, Delaware, District of Columbia, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia and West Virginia

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About Census Regions and Divisions [1 MB, 2 pages]

Region 1: Northeast

Percent Positive

SVG: Northeast United States percent positive RSV tests, by week

Table: Northeast United States percent positive RSV tests, by week

Data for recent weeks may be incomplete due to delays in reporting. These preliminary data are shaded gray and may change as more data become available.

Detections

SVG: Northeast United States RSV detections, by week

Table: Northeast United States RSV detections, by week

Data for recent weeks may be incomplete due to delays in reporting. These preliminary data are shaded gray and may change as more data become available.

Region 2: Midwest

Percent Positive

SVG: Midwest United States percent positive RSV tests, by week.

Table: Midwest United States percent positive RSV tests, by week

Data for recent weeks may be incomplete due to delays in reporting. These preliminary data are shaded gray and may change as more data become available.

Detections

SVG: Midwest United States RSV detections, by week

Table: Midwest United States RSV detections, by week

Data for recent weeks may be incomplete due to delays in reporting. These preliminary data are shaded gray and may change as more data become available.

Region 3: South

Percent Positive

SVG: South United States percent positive RSV tests, by week.

Table: South United States percent positive RSV tests, by week

Data for recent weeks may be incomplete due to delays in reporting. These preliminary data are shaded gray and may change as more data become available.

Detections

SVG: South United States RSV detections, by week

Table: South United States RSV detections, by week

Data for recent weeks may be incomplete due to delays in reporting. These preliminary data are shaded gray and may change as more data become available.

Region 4: West

Percent Positive

SVG: West United States percent positive RSV tests, by week.

Table: West United States percent positive RSV tests, by week

Data for recent weeks may be incomplete due to delays in reporting. These preliminary data are shaded gray and may change as more data become available.

Detections

SVG: West United States RSV detections, by week

Table: West United States RSV detections, by week

Data for recent weeks may be incomplete due to delays in reporting. These preliminary data are shaded gray and may change as more data become available.

Florida State

Percent Positive

SVG: Florida percent positive RSV tests, by week

Table: Florida percent positive RSV tests, by week

Data for recent weeks may be incomplete due to delays in reporting. These preliminary data are shaded gray and may change as more data become available.

Detections

SVG: Florida RSV detections, by week

Table: Florida RSV detections, by week

Data for recent weeks may be incomplete due to delays in reporting. These preliminary data are shaded gray and may change as more data become available.