Las Vegas • Health officials will test up to 200 students and teachers for tuberculosis after one case was confirmed at a Las Vegas high school.

The Southern Nevada Health District says it identified people at Durango High School who may have been exposed to the bacterial disease that primarily affects the lungs.

The health district said Thursday that it notified select students about possible exposure through a letter warning they had close and prolonged contact with the infected person and need to be tested.

The district began investigating in mid- to late-February and the infected person was soon excused from school as health and school officials worked together to identify people who require testing.

The tests mandated by law will be conducted free of charge at the school next week.