SELLERSBURG, Ind. (AP) _ Health officials say more than 50 southern Indiana people exposed to a student with a confirmed case of tuberculosis have tested positive for the disease in preliminary tests.

The Indiana State Department of Health said Wednesday that 49 students and staff at Rock Creek Community Academy in Sellersburg, about 10 miles north of Louisville, Kentucky, have tested positive and five others belong to a church.

It says the student with tuberculosis is isolated and responding well to treatment. Two other people have had abnormal chest X-rays, including one who's showing symptoms of the disease.

TB bacteria typically attack the lungs, but can also attack the kidneys and brain, and the disease can be deadly if left untreated. The bacteria are typically transmitted through coughs and sneezes.