COVID, Flu & RSV Levels by State
In the week ending 10 October 2026, CDC wastewater monitoring found High or Very High levels of COVID-19 at 199 of 797 sites (25%); Flu A at 22 of 726 sites (3%); RSV at 15 of 713 sites (2%). Highest share of COVID-19 sites: Oregon (100%).
Very High High Moderate Low Very Low
By state — share of sampling sites in each level
| State | COVID-19 (High+) | Flu A (High+) | RSV (High+) | COVID-19 sites |
|---|---|---|---|---|
| Alabama | 2 / 5 | 0 / 5 | 1 / 5 | |
| Alaska | 0 / 4 | 0 / 4 | 0 / 4 | |
| Arizona | 0 / 2 | 0 / 2 | 0 / 2 | |
| Arkansas | 0 / 1 | 0 / 1 | 0 / 1 | |
| California | 38 / 54 | 3 / 54 | 0 / 54 | |
| Colorado | 2 / 23 | 1 / 22 | 0 / 23 | |
| Connecticut | 4 / 7 | 1 / 7 | 0 / 7 | |
| Delaware | 3 / 9 | 0 / 9 | 3 / 9 | |
| District of Columbia | — | — | — | — |
| Florida | 8 / 10 | 0 / 10 | 1 / 10 | |
| Georgia | 11 / 20 | 0 / 20 | 0 / 20 | |
| Hawaii | 2 / 4 | 3 / 4 | 0 / 4 | |
| Idaho | 1 / 3 | 0 / 3 | 0 / 3 | |
| Illinois | 2 / 73 | 0 / 73 | 0 / 73 | |
| Indiana | 1 / 27 | 0 / 27 | 0 / 26 | |
| Iowa | 2 / 11 | 0 / 11 | 0 / 11 | |
| Kansas | 1 / 5 | 0 / 5 | 0 / 5 | |
| Kentucky | 9 / 19 | 3 / 19 | 4 / 14 | |
| Louisiana | 0 / 2 | 0 / 2 | 0 / 2 | |
| Maine | 0 / 9 | 0 / 9 | 0 / 3 | |
| Maryland | 1 / 2 | 0 / 2 | 0 / 2 | |
| Massachusetts | 1 / 5 | 0 / 5 | 0 / 5 | |
| Michigan | 1 / 28 | 1 / 28 | 2 / 28 | |
| Minnesota | 0 / 27 | 0 / 24 | 0 / 21 | |
| Mississippi | 1 / 1 | 0 / 1 | 0 / 1 | |
| Missouri | 1 / 18 | 0 / 18 | 1 / 18 | |
| Montana | 1 / 2 | — | — | |
| Nebraska | 0 / 3 | 0 / 3 | 0 / 3 | |
| Nevada | 0 / 1 | 0 / 1 | 0 / 1 | |
| New Hampshire | 5 / 15 | 1 / 15 | 0 / 15 | |
| New Jersey | 6 / 25 | 0 / 25 | 0 / 25 | |
| New Mexico | 0 / 5 | — | — | |
| New York | 17 / 115 | 0 / 59 | 0 / 59 | |
| North Carolina | 12 / 31 | 0 / 31 | 1 / 31 | |
| North Dakota | — | — | — | — |
| Ohio | 0 / 57 | 0 / 57 | 0 / 54 | |
| Oklahoma | — | — | — | — |
| Oregon | 5 / 5 | 3 / 5 | 2 / 19 | |
| Pennsylvania | 4 / 12 | 0 / 12 | 0 / 7 | |
| Puerto Rico | — | — | — | — |
| Rhode Island | 3 / 11 | 0 / 11 | 0 / 11 | |
| South Carolina | 12 / 23 | 3 / 23 | 0 / 23 | |
| South Dakota | 0 / 1 | 0 / 1 | 0 / 1 | |
| Tennessee | 2 / 2 | 0 / 2 | 0 / 2 | |
| Texas | 5 / 33 | 0 / 33 | 0 / 33 | |
| Utah | 10 / 33 | 1 / 33 | 0 / 33 | |
| Vermont | 0 / 3 | 0 / 3 | 0 / 3 | |
| Virginia | 0 / 2 | 0 / 2 | 0 / 2 | |
| Washington | 21 / 26 | 0 / 26 | 0 / 25 | |
| West Virginia | 3 / 15 | 2 / 13 | 0 / 10 | |
| Wisconsin | 0 / 3 | 0 / 3 | 0 / 3 | |
| Wyoming | 1 / 3 | 0 / 1 | — |
"5 / 33" = 5 of the state's 33 reporting sites at High or Very High. "—" = no site reported this week.
When levels are high where you live
- Stay current on vaccines for COVID-19 and flu, and RSV if you are 75+, 50–74 with risk factors, pregnant, or have an infant.
- Test if you have symptoms; antivirals for COVID-19 and flu work best in the first days and are meant for people at higher risk.
- A well-fitting mask in crowded indoor places and better ventilation cut the risk for you and for people around you.
- Stay home when sick. Outbreak news is in our epidemic record.
What this page shows, and what it misses
CDC's weekly wastewater viral activity level for each sampling site — a treatment plant or a point upstream — compared with that site's own baseline, in five categories from Very Low to Very High. State rows count sites; CDC's own state level, on its map, weighs sites differently and can differ from what these counts suggest. Places not on a sewer system, and sites that did not report this week, are not covered. Wastewater shows community spread, not the number of cases.
Data: Centers for Disease Control and Prevention, National Wastewater Surveillance System, "CDC Wastewater Viral Activity Level for SARS-CoV-2, Influenza A and RSV" (data.cdc.gov) — public domain U.S. Government work.