A camp session for homeless children and those living with HIV/AIDS was canceled after two of its volunteers tested positive for H1N1 virus (swine flu), The Associated Press reports. One Heartland, a Milwaukee-based charity, scheduled the weeklong camp to begin July 17 at Willow River in eastern Minnesota.

Founder and CEO of the charity, Neil Willenson said there are no known cases of swine flu among campers who already attended One Heartland this summer.