Health officials on Saturday were investigating complaints of respiratory illnesses that a media report said affected dozens of people after a fundraiser at the Playboy Mansion in Los Angeles that was part of a larger conference. The Department of Public Health issued a statement Saturday saying only that it was investigating a suspected respiratory infection outbreak among attendees of a conference on the west side of Los Angeles County. The Los Angeles Times said there were reports that dozens of people were sickened after the event at the L.A. mansion, but neither the newspaper nor county health officials cited a specific number of cases.