THE VACCINE SHOULD BE STORED IN A REFRIGERATOR BETWEEN +2°C AND +8°C OR IN A FREEZER AT -20°C. FREEZING AND THAWING DOES NOT AFFECT THE TITRE OF THE VACCINE. IN ORDER TO PRESERVE OPTIMAL POTENCY OF POLIO SABIN™ (ORAL), EXPOSURE OF THE VACCINE TO AMBIENT (NON-REFRIGERATED) TEMPERATURES SHOULD BE KEPT TO A MINIMUM AND EXPOSURE TO SUNLIGHT SHOULD BE AVOIDED.