Archive · 6 Sep 2025
TB Cases Rise in US, Including Maine and California
Tuberculosis, or TB, is a serious disease that's spreading in some parts of the US.
It's caused by bacteria and mainly affects the lungs, but it can spread to other parts of the body.
In Maine, there are a few active cases, and there's also a case in a California high school, and another in a Michigan high school.
TB spreads through the air and is very contagious.
While it's not as easily spread as the flu, it's still the world's deadliest infectious disease.
The Maine CDC is contacting people who may have come into contact with infected patients.
If you have TB, you may have a cough, fever, and chest pain.
Maine has three active TB cases linked to the Greater Portland area.
TB cases are rising nationwide, according to the Maine CDC and US CDC.
A high school student in Riverside County, California, has an active TB case.
Another active case was reported in a Michigan high school last week.
TB can spread through the air and potentially infect multiple organs.
- Who
- Maine CDC and US CDC
- What
- Tuberculosis cases are rising in the US, specifically in Maine and California.
- When
- Cases are rising since 2021 after a drop in 2020. Reported in September 2025.
- Where
- Maine, California, and Michigan (US)
- Why
- The rise in cases is an ongoing trend, but the exact cause isn't specified in the provided articles.
- Maine TB Cases
- 3 active cases in Greater Portland area
- TB Cases Rise
- Trend began in 2021 after a drop in 2020
- California Case
- Riverside County High School student, receiving treatment
- Michigan Case
- Reported in a high school last week
- Maine TB Cases in 2025
- 28 cases reported through July
- World's Deadliest
- TB claims over one million lives annually