State health officials say food poisoning caused an outbreak of gastrointestinal illness that sickened about three dozen people attending a wedding reception outside Syracuse two months ago. The Post-Standard of Syracuse reports that the Department of Health says today its lab tested samples collected from some of the approximately 35 people who became ill while attending a reception held July 31 at the Arrowhead Lodge, an Onondaga County-owned venue located in Brewerton on the western end of Oneida Lake.