Mass. health officials probe potential breast cancer cluster at Uxbridge High School

• School officials notified the public about the situation after the school's commencement.

Threat level: Officials have ruled out the water supply as a risk factor.

• Indoor air quality testing scheduled for Thursday will cover carbon monoxide, humidity, airflow and volatile organic compounds, according to school officials.
• Outdoor air quality monitoring is ongoing.
• Building systems — including HVAC, electrical and plumbing — are under review.

The big picture: The school was built in 2012, so investigators are researching the site's prior uses and history.

Zoom in: The Uxbridge Teachers Association has urged members to cooperate with the investigation and acknowledged the district's support for the affected faculty.

What's next: DPH says there's currently no evidence of immediate danger.

• The school will remain open through the last day of school on June 12, and a final public report will be released once the investigation concludes.