The South Carolina Department of Health and Environmental Control said on Tuesday that 146 of 148 tests for tuberculosis on students from Stratford High School in Berkeley County returned negative.
Sixty-four school staff members were tested and 63 results returned negative for tuberculosis. One test is pending results.
The DHEC was informed by a medical facility on Jan. 13 that a student tested positive for tuberculosis. DHEC immediately spoke with the patient, and tested a blood sample to confirm the diagnosis.
The DHEC worked with school officials to determine where other students and faculty could have been exposed. Letters were sent from the school district to parents to inform them of the positive test results.
"Those students who may have been exposed to the germ that causes TB will receive a letter from DHEC today explaining steps for testing," the district wrote in the letter. "If you have concerns, and your child has not been recommended for testing, please contact your primary care physician."
The patient's family and close friends were informed and scheduled for testing with the DHEC.
Additional students, teachers, bus drivers and staff members were tested on Tuesday, and results are pending.
DHEC said it would follow-up with 41 individuals, including 26 students, 11 teachers and four bus drivers, who have not been tested yet. All individuals have been notified that they need to be tested.
DHEC is continuing to be involved in the situation and will update the public as information becomes available.