Casewatch & Stormlayer
Dark newsroom map of the United States

Live CDC surveillance

The country, this week, on one map.

A live atlas of confirmed US infectious disease cases. Public National Notifiable Diseases Surveillance System counts and CDC wastewater — for people who have to explain the week, and anyone who just needs to see it.

For information only, not medical advice. Data from public CDC surveillance.

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Casewatch9:41

This week

726 cases

MMWR week 40 · Oct 4–10, 2026

  • Measles, locally acquired

    224

    7 places

  • Legionellosis

    104

    18 places

  • Pertussis

    71

    13 places

  • Candida auris, screening

    69

    13 places

The public map

Confirmed cases, not streets.

CDC publishes by state, D.C., New York City, and territory. Casewatch never pretends to know a household. Wastewater dots show community viral activity for COVID-19, flu A, and RSV. Not medical advice. Not an official CDC product.

This week

A desk copy of the snapshot.

Filter by disease family. Open a report. This is a studio copy of the live atlas so you can feel the instrument — then open the real map.

Confirmed cases

This week

MMWR week 40 · Oct 4–10, 2026

Cases
726
Places
38
Diseases
38

Vaccine-preventable

Measles, locally acquired

Highest count this week. Pennsylvania 167, New York 30, Kentucky 15.

Cases
224
Places
7

Highest counts

  1. Pennsylvania PA167
  2. New York NY30
  3. Kentucky KY15
  4. Ohio OH9
  5. Wisconsin WI1
  6. Minnesota MN1
  7. Indiana IN1

Top reports from the public atlas for MMWR week 40 · Oct 4–10, 2026. The week total is 726 cases across 38 places and 38 diseases. Not an official CDC product. Counts are provisional.

Open the live atlas

Confirmed cases, not streets

CDC publishes by state, D.C., New York City, and territory. Casewatch never pretends to know a household.

A watchlist that actually watches

Pin places and diseases. Pro alerts you when a watched report is elevated against its 52-week range.

Briefing and CSV

Export this MMWR week as a table, or copy a plain-language briefing with sources attached.

Built for desks

Newsroom adds an embed snippet and a named organization on the receipt — for pages that sit beside a story.

Printed United States choropleth on a briefing desk

Pricing

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Infectious disease atlas

Casewatch

Public

Free

The live atlas. Confirmed CDC counts and wastewater. No card.

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