Dozens of children and four adults in Anne Arundel County were transported to local hospitals Wednesday morning after exposure to pool chemicals.
The incident happened at Camp Letts, a YMCA camp in Edgewater.
A total of 35 patients--31 children and four adults--were treated for exposure to sodium hyperchlorite and muriatic acid after a mechanical error with the pool's filtration system.
Officials on the scene managing the hazmat incident say 13 patients have serious but not life-threatening injuries and 13 have minor injuries. Many of the children are experiencing nausea and vomiting.
Check back with ABC2 News as we update this developing story.