Fastcompany iconFastcompanySep 23, 2026 ~1 min source read

Measles outbreaks surge to top 3,500 cases this year: These tracker maps show the areas hardest hit

Here's what you need to know about the multiple outbreaks affecting the country, and which areas are currently being hit the hardest. According to the Johns Hopkins Bloomberg School of Public Health, as of September 18, 3,568 measles cases were reported in the United States this year so far.

Measles outbreaks surge to top 3,500 cases this year: These tracker maps show the areas hardest hit

Share this story

Send the public story page.

Useful takeaways from this story.

Here's what you need to know about the multiple outbreaks affecting the country, and which areas are currently being hit the hardest.

According to the Johns Hopkins Bloomberg School of Public Health, as of September 18, 3,568 measles cases were reported in the United States this year so far.

More worryingly, nearly 10% of those cases—341 of them—occurred in the previous two weeks leading up to September 18.

Building the complete brief

The page is ready to read now. The fuller skim-friendly version will appear here automatically.

The useful part

Here's what you need to know about the multiple outbreaks affecting the country, and which areas are currently being hit the hardest. According to the Johns Hopkins Bloomberg School of Public Health, as of September 18, 3,568 measles cases were reported in the United States this year so far. More worryingly, nearly 10% of those cases—341 of them—occurred in the previous two weeks leading up to September 18.

How it works

  • measles cases reported in all of 2025, and a level not seen since 1991, when the U.S.
  • Centers for Disease Control and Prevention (CDC) says measles cases reached 9,643.

Details worth keeping

The United States has reached an ignominious milestone this week. The figure is nearly 1,300 more than the total U.S. According to the CDC, measles cases for 2026 in the U.S.

Keep reading in the app

Open the app view to save this story, compare related coverage, and continue from the same source.

Open in app