LexingtonKY.com

Flu, COVID and RSV in Lexington this week

COVID

Newest week, October 11 to October 17

Town Branch

Very HighAbout the same

West Hickman

Very HighAbout the same

Flu A

Newest week, October 11 to October 17

Town Branch

ModerateUp

West Hickman

HighUp

RSV

Newest week, October 11 to October 17

Town Branch

Very LowAbout the same

West Hickman

Very LowAbout the same

These are the newest readings CDC has released for Lexington's two treatment plants. Each week's samples take about a week to test, so the newest week shown here is always a week or so behind today. This page checks for new readings every Saturday morning.

The last 52 weeks

COVID

01020Oct 25, 2025Oct 17, 2026Week ending Oct 25, 2025, three week average, this year 4.2, last year 8.4Week ending Nov 1, 2025, three week average, this year 4.5, last year 11.3Week ending Nov 8, 2025, three week average, this year 5.3, last year 10.9Week ending Nov 15, 2025, three week average, this year 5.9, last year 8.9Week ending Nov 22, 2025, three week average, this year 7.1, last year 6.3Week ending Nov 29, 2025, three week average, this year 5.9, last year 6.6Week ending Dec 6, 2025, three week average, this year 7.2, last year 7.1Week ending Dec 13, 2025, three week average, this year 6.8, last year 6.9Week ending Dec 20, 2025, three week average, this year 9.9, last year 5.5Week ending Dec 27, 2025, three week average, this year 7.4Week ending Jan 10, 2026, three week average, this year 9.6, last year 5.5Week ending Jan 17, 2026, three week average, this year 13, last year 5.6Week ending Jan 24, 2026, three week average, this year 11.9, last year 6.2Week ending Jan 31, 2026, three week average, this year 10.3, last year 6.7Week ending Feb 7, 2026, three week average, this year 10.0, last year 5.7Week ending Feb 14, 2026, three week average, this year 9.9, last year 4.3Week ending Feb 21, 2026, three week average, this year 9.8, last year 4.3Week ending Feb 28, 2026, three week average, this year 12.3, last year 5.1Week ending Mar 7, 2026, three week average, this year 13.5, last year 5.0Week ending Mar 14, 2026, three week average, this year 13.7, last year 4.8Week ending Mar 21, 2026, three week average, this year 13, last year 4.3Week ending Mar 28, 2026, three week average, this year 13.7, last year 6.3Week ending Apr 4, 2026, three week average, this year 13.1, last year 6.0Week ending Apr 11, 2026, three week average, this year 11.2, last year 5.7Week ending Apr 18, 2026, three week average, this year 12.1, last year 3.5Week ending Apr 25, 2026, three week average, this year 10.1, last year 4.1Week ending May 2, 2026, three week average, this year 7.8, last year 4.6Week ending May 9, 2026, three week average, this year 2.6, last year 4.5Week ending May 16, 2026, three week average, this year 3.0, last year 4.1Week ending May 23, 2026, three week average, this year 4.3, last year 3.9Week ending May 30, 2026, three week average, this year 8.3, last year 3.9Week ending Jun 6, 2026, three week average, this year 8.5, last year 2.8Week ending Jun 13, 2026, three week average, this year 7.8, last year 2.2Week ending Jun 20, 2026, three week average, this year 3.2, last year 2.0Week ending Jun 27, 2026, three week average, this year 1.5, last year 2.4Week ending Jul 4, 2026, three week average, this year 1, last year 3.2Week ending Jul 11, 2026, three week average, this year 3.1, last year 3.6Week ending Jul 18, 2026, three week average, this year 3.5, last year 4.8Week ending Jul 25, 2026, three week average, this year 4.5, last year 5.6Week ending Aug 1, 2026, three week average, this year 5.6, last year 6.2Week ending Aug 8, 2026, three week average, this year 10, last year 7.1Week ending Aug 15, 2026, three week average, this year 11.4, last year 8.4Week ending Aug 22, 2026, three week average, this year 9.0, last year 10.3Week ending Aug 29, 2026, three week average, this year 7.5, last year 11.6Week ending Sep 5, 2026, three week average, this year 10.4, last year 12.9Week ending Sep 12, 2026, three week average, this year 10, last year 14.8Week ending Sep 19, 2026, three week average, this year 9.9, last year 14.4Week ending Sep 26, 2026, three week average, this year 7.0, last year 12.3Week ending Oct 3, 2026, three week average, this year 9.0, last year 11.4Week ending Oct 10, 2026, three week average, this year 11.3, last year 10.7Week ending Oct 17, 2026, three week average, this year 16.5, last year 8.7

Flu A

02550Oct 25, 2025Oct 17, 2026Week ending Oct 25, 2025, three week average, this year 11.1, last year 1.8Week ending Nov 1, 2025, three week average, this year 6.0, last year 1.4Week ending Nov 8, 2025, three week average, this year 4.4, last year 1.3Week ending Nov 15, 2025, three week average, this year 2.1, last year 1Week ending Nov 22, 2025, three week average, this year 2.1, last year 1Week ending Nov 29, 2025, three week average, this year 2.1, last year 1Week ending Dec 6, 2025, three week average, this year 1, last year 1Week ending Dec 13, 2025, three week average, this year 3.0, last year 1Week ending Dec 20, 2025, three week average, this year 7.7, last year 1Week ending Dec 27, 2025, three week average, this year 7.7Week ending Jan 10, 2026, three week average, this year 3.9, last year 3.7Week ending Jan 17, 2026, three week average, this year 4.2, last year 2.8Week ending Jan 24, 2026, three week average, this year 3.4, last year 4.6Week ending Jan 31, 2026, three week average, this year 5.8, last year 7.5Week ending Feb 7, 2026, three week average, this year 8.5, last year 8.9Week ending Feb 14, 2026, three week average, this year 14.3, last year 7.0Week ending Feb 21, 2026, three week average, this year 11.6, last year 5.0Week ending Feb 28, 2026, three week average, this year 8.8, last year 3.6Week ending Mar 7, 2026, three week average, this year 15.5, last year 3.3Week ending Mar 14, 2026, three week average, this year 20.9, last year 1.8Week ending Mar 21, 2026, three week average, this year 28.7, last year 1.8Week ending Mar 28, 2026, three week average, this year 15.9, last year 1.3Week ending Apr 4, 2026, three week average, this year 10.4, last year 1Week ending Apr 11, 2026, three week average, this year 8.5, last year 1Week ending Apr 18, 2026, three week average, this year 8.5, last year 1Week ending Apr 25, 2026, three week average, this year 8.7, last year 1Week ending May 2, 2026, three week average, this year 4.9, last year 1Week ending May 9, 2026, three week average, this year 4.9, last year 1Week ending May 16, 2026, three week average, this year 3.1, last year 1Week ending May 23, 2026, three week average, this year 1, last year 1Week ending May 30, 2026, three week average, this year 1, last year 1Week ending Jun 6, 2026, three week average, this year 2.3, last year 1Week ending Jun 13, 2026, three week average, this year 2.3, last year 1Week ending Jun 20, 2026, three week average, this year 2.3, last year 1Week ending Jun 27, 2026, three week average, this year 1, last year 1Week ending Jul 4, 2026, three week average, this year 13.8, last year 1Week ending Jul 11, 2026, three week average, this year 15.4, last year 1Week ending Jul 18, 2026, three week average, this year 15.4, last year 1Week ending Jul 25, 2026, three week average, this year 2.6, last year 2.0Week ending Aug 1, 2026, three week average, this year 1, last year 2.0Week ending Aug 8, 2026, three week average, this year 1, last year 2.0Week ending Aug 15, 2026, three week average, this year 1, last year 1Week ending Aug 22, 2026, three week average, this year 1, last year 1Week ending Aug 29, 2026, three week average, this year 1, last year 1Week ending Sep 5, 2026, three week average, this year 1, last year 1Week ending Sep 12, 2026, three week average, this year 5.8, last year 1Week ending Sep 19, 2026, three week average, this year 13.8, last year 1Week ending Sep 26, 2026, three week average, this year 13.8, last year 1Week ending Oct 3, 2026, three week average, this year 10.1, last year 1Week ending Oct 10, 2026, three week average, this year 2.1, last year 1Week ending Oct 17, 2026, three week average, this year 5.2, last year 1

RSV

0125250Oct 25, 2025Oct 17, 2026Week ending Oct 25, 2025, three week average, this year 1, last year 1Week ending Nov 1, 2025, three week average, this year 1, last year 1Week ending Nov 8, 2025, three week average, this year 1, last year 1Week ending Nov 15, 2025, three week average, this year 1, last year 1Week ending Nov 22, 2025, three week average, this year 1, last year 1Week ending Nov 29, 2025, three week average, this year 1, last year 1Week ending Dec 6, 2025, three week average, this year 1, last year 1Week ending Dec 13, 2025, three week average, this year 15, last year 1Week ending Dec 20, 2025, three week average, this year 15, last year 1Week ending Dec 27, 2025, three week average, this year 15Week ending Jan 10, 2026, three week average, this year 47, last year 206.8Week ending Jan 17, 2026, three week average, this year 47, last year 150.7Week ending Jan 24, 2026, three week average, this year 31.6, last year 13.5Week ending Jan 31, 2026, three week average, this year 53.8, last year 13.5Week ending Feb 7, 2026, three week average, this year 57.7, last year 1Week ending Feb 14, 2026, three week average, this year 57.7, last year 1Week ending Feb 21, 2026, three week average, this year 4.9, last year 1Week ending Feb 28, 2026, three week average, this year 3.4, last year 1Week ending Mar 7, 2026, three week average, this year 29.8, last year 1Week ending Mar 14, 2026, three week average, this year 29.8, last year 1Week ending Mar 21, 2026, three week average, this year 96, last year 1Week ending Mar 28, 2026, three week average, this year 69.6, last year 1Week ending Apr 4, 2026, three week average, this year 69.6, last year 1Week ending Apr 11, 2026, three week average, this year 1, last year 1Week ending Apr 18, 2026, three week average, this year 1, last year 1Week ending Apr 25, 2026, three week average, this year 1, last year 1Week ending May 2, 2026, three week average, this year 1, last year 1Week ending May 9, 2026, three week average, this year 1, last year 15.4Week ending May 16, 2026, three week average, this year 1, last year 15.4Week ending May 23, 2026, three week average, this year 1, last year 26.3Week ending May 30, 2026, three week average, this year 1, last year 11.8Week ending Jun 6, 2026, three week average, this year 1, last year 11.8Week ending Jun 13, 2026, three week average, this year 1, last year 1Week ending Jun 20, 2026, three week average, this year 1, last year 1Week ending Jun 27, 2026, three week average, this year 1, last year 1Week ending Jul 4, 2026, three week average, this year 1, last year 1Week ending Jul 11, 2026, three week average, this year 1, last year 1Week ending Jul 18, 2026, three week average, this year 1, last year 1Week ending Jul 25, 2026, three week average, this year 1, last year 1Week ending Aug 1, 2026, three week average, this year 1, last year 1Week ending Aug 8, 2026, three week average, this year 1, last year 1Week ending Aug 15, 2026, three week average, this year 1, last year 1Week ending Aug 22, 2026, three week average, this year 1, last year 1Week ending Aug 29, 2026, three week average, this year 1, last year 1Week ending Sep 5, 2026, three week average, this year 1, last year 1Week ending Sep 12, 2026, three week average, this year 1, last year 1Week ending Sep 19, 2026, three week average, this year 1, last year 1Week ending Sep 26, 2026, three week average, this year 1, last year 1Week ending Oct 3, 2026, three week average, this year 1, last year 1Week ending Oct 10, 2026, three week average, this year 1, last year 1Week ending Oct 17, 2026, three week average, this year 1, last year 69.6

The charts average the two plants' CDC activity numbers and smooth each line over three weeks, so a single noisy week does not swing the trend. The cards above show each plant's own weekly number.

What these numbers are

Treatment plants test what comes down the sewer for virus, and CDC turns each week's result into a level from Very Low to Very High. The level says how much virus is in the community, not how many people are sick or how sick they are. It tends to move before doctor visits do.

Lexington has two treatment plants and the cards show each on its own, because they do not always agree. Up, Down and About the same compare a plant's level word this week with its level word the week before.

CDC adjusted its category cutoffs in August 2026 and recomputed past weeks to match, so the words on this page are always CDC's current words. This page shows the numbers and gives no health advice.

Where the readings come from

Lexington's readings come from its two wastewater treatment plants.

  • Town Branch, which serves the northern and western parts of the city and downtown
  • West Hickman, just south of the county line in Jessamine County, which serves most of southern and eastern Fayette County

Under a 2003 contract, West Hickman also takes up to 2 million gallons a day from northern Jessamine County against an average flow near 19 million, so its readings are mostly Lexington with a small share of Jessamine mixed in.

Both plants report to the Kentucky Wastewater Surveillance System, which is part of CDC's national wastewater program, and CDC publishes the data every Friday.

Questions people ask about flu in Lexington

Is flu going around in Lexington right now?

As of the week ending October 17, 2026, Lexington wastewater shows Flu A at Moderate at Town Branch and High at West Hickman, COVID at Very High, and RSV at Very Low.

What does a wastewater level mean?

CDC's wastewater viral activity level compares how much of a virus is in a plant's wastewater now with that plant's own low level over the last 24 months. CDC sorts the result into five levels, Very Low, Low, Moderate, High and Very High. A higher level means the virus is further above that plant's typical low level.

Why wastewater instead of case counts?

Wastewater testing picks up infections whether or not people have symptoms, and according to CDC it does not depend on anyone having access to healthcare, seeing a doctor or getting a test. That lets it signal that a virus might be spreading in the community even before people go to their doctor or the hospital.

Where does the data come from and how often does it update?

The newest week on this page is usually about nine days behind today's date, because the plants' samples have to be tested and reported before CDC publishes them. The readings come from CDC's National Wastewater Surveillance System, for Lexington's two treatment plants, Town Branch and West Hickman. CDC updates its wastewater viral activity levels each week, and this page pulls the new week early every Saturday morning. Every week the page has pulled is kept in our own records and never deleted, and the charts show the last 52 weeks.

Does this track COVID and RSV too?

Yes. The page tracks Flu A, COVID and RSV. Measles is not shown yet, because CDC's measles wastewater data had no Lexington site when this was written in October 2026, and the page will add measles when a Lexington site exists.

When does flu season usually peak in Kentucky?

CDC describes flu season for the United States as a whole. It usually comes in the fall and winter, and most of the time flu activity peaks between December and February. The timing changes from year to year, and some seasons have peaked in March.

Does this page cover the whole state of Kentucky?

No. It covers Fayette County plus the one Lexington plant just over the line in Jessamine County, which is West Hickman. For the rest of Kentucky, the Kentucky Wastewater Surveillance System dashboard shows every plant in the state that takes part.

This page shows public data and is not medical advice. If you are sick, call your doctor or the Lexington-Fayette County Health Department at (859) 252-2371.