What can a pregnant woman do about exposure to an active tuberculosis patient?

PPD testing serially: Serial PPD (tuberculosis skin testing) should be performed to determine if this pregnant woman had been previously exposed to tb, or if this exposure was enough to convert her PPD from negative to positive. New PPD conversions to positive should be assessed for active TB with chest x-ray and treated fully with anti-tb medication(s) as Isoniazid for 6-9 months. See a maternal-fetal medicine doctor!