(1) The provisions of this rule apply to all forms of typhoid fever.

(a) Infection control precautions must be imposed until specific therapy for the fever has been completed and no fewer than three successive specimens of feces have been found negative for typhoid organisms, the first of which is taken one month after therapy is discontinued and followed by the other two at no less than one-week intervals.

(b) The local health officer may not allow an infected person to engage in a sensitive occupation until infection control precautions have been terminated in accordance with (1)(a).