W. Va. Code § 5-14A-8
Before a qualified interpreter may participate in any proceedings under the provisions of this article, the interpreter shall make an oath or affirmation that he or she will make a true interpretation in an understandable manner to the deaf person for whom he or she is appointed and that he or she will interpret the statements of the deaf person desiring that statements be made, in the English language to the best of his or her skill and judgment. The appointing authority shall provide recess periods as necessary for the interpreter when the interpreter so indicates. Any and all information that the interpreter gathers from the deaf person pertaining to any proceeding then pending shall at all times remain confidential and privileged, or on a equal basis with the attorney-client privilege, unless the deaf person desired that the information be communicated to other persons.
W. Va. Code § 5-14A-8