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A sudden wave of illness struck at a youth academy with military-style training near Washington, D.C., sending at least 19 cadets to local hospitals on Sunday. The mysterious sickness triggered a mass casualty response, according to officials.
Emergency personnel quickly arrived at the Capital Guardian Youth Challenge Academy in Laurel, Maryland, after cadets started showing symptoms following lunch, shared the DC National Guard, with reports from FOX 5 DC.
The Capital Guardian Youth Challenge Academy, run by the DC National Guard, offers a structured, military-style life intervention program for teenagers identified as at risk, as described by the academy itself.

The cadets from the Capital Guardian Youth Challenge Academy were captured marching down Pennsylvania Avenue during a parade on April 16, 2014, in Washington, DC. (Chip Somodevilla/Getty Images)
One mother told FOX 5 that blood tests at a hospital showed her son had elevated carbon monoxide levels. He reportedly developed delayed symptoms hours after other cadets were taken for treatment, including dizziness, headaches and nausea.
The mother added that the youth academy decided to temporarily close following the incident.
However, Anne Arundel County Fire Department officials said they conducted a carbon monoxide investigation and did not detect elevated levels of the gas, according to the local station.

Members of the National Guard patrol along Constitution Ave. on Dec. 1, 2025, in Washington, DC. (Heather Diehl/Getty Images)
Officials have not confirmed the cause of the illness but said it could be related to food.
DC National Guard officials said the health and safety of cadets and staff remain their highest priority and that they are working with emergency medical personnel and public health authorities as the investigation continues, according to FOX 5.

Members of the National Guard patrol near the U.S. Capitol on the National Mall in Washington, DC, US, on Monday, Sept. 29, 2025. (Al Drago/Bloomberg via Getty Images)
Officials added that while 19 cadets were sent to area hospitals, one adult was evaluated at the scene and declined further medical treatment.
News Media reached out to D.C. National Guard for more information.