School officials in Manassas say an Osbourn High School student has tested positive for tuberculosis.

Officials learned of the diagnosis Tuesday, one day after about 250 people at the school were tested for the bacterial infection. Students will be reevaluated Wednesday.

Although Prince William health officials say there is little risk of transferring the disease in a school setting, they have briefed school officials and students of the symptoms.

The Centers for Disease Control and Prevention says TB can be spread by coughing or sneezing, but prolonged and close contact with an infected person is required to catch the disease.