(Falcon Heights, MN) -- Three cases of a new strain of swine flu have cropped up among people who exhibited pigs or spent time in the swine barn at the Minnesota State Fair. Health Department officials say the H1N2 strain is different from the one that has prompted stepped-up prevention efforts nationwide. One Minnesota case is a teenage girl who was exhibiting pigs at the Fair. Another is an elementary school-aged boy who spent all day in the swine barn, and a woman in her late 70s had to been hospitalized when becoming ill after also spending a prolonged amount of time in the swine barn. Officials say they do not anticipate changing their current public health recommendations on human exposure to swine.