(1) Infection control precautions must be observed.

(2) An individual employed in a sensitive occupation must be assessed for transmission risk. At the discretion of the local health officer, if the circumstances of the case warrant it (e.g., hygiene factors, food type, population served, etc.), the case may be restricted from employment until stool specimens obtained on three successive days are negative.

(3) Sources of infection must be sought, especially in the home, within the family, in food, and in water.