A recorded TB case may be removed from the Cal/OSHA Form 300 when it was not caused by occupational exposure, as evidenced by:
- a positive TB skin test resulting from a pre-employment physical, or
- the employee living in a household with a person diagnosed with active TB,
- the Public Health Department identifying the employee as a contact of an individual with active TB, unrelated to the workplace,
- a medical investigation showing the infection was caused by exposure away from work.