Exposure to light, frozen or overheated vaccines may lead to patients experiencing a reduced immune response and/or an increase in local reactions. To avoid unnecessary vaccine wastage you should:
- Ensure refrigerator temperatures are maintained between 2° to 8° C
- In cases of power failures, refrigerator doors being left open, frequent opening of the refrigerator doors during clinic hours, or refrigerator malfunction that compromises the cold chain, call Ottawa Public Health 613-580-6744 and ask to be directed to the Vaccine Distribution Centre. A Vaccine Program Coordinator will assess the situation and provide you with further instructions
- Never administer or discard exposed vaccine. Leave it in the refrigerator, and mark it as having been potentially exposed. Do not use it until the Vaccine Program Coordinator has assessed the situation.
- Ensure your office vaccine refrigerator is not overstocked, as this may cause temperatures to fluctuate or doors to become ajar
- Defrost the freezer regularly, as excessive ice build-up can cause temperature fluctuations
Feel free to contact OPH for further information on how to maintain a safe cold chain.
Your ongoing support to maintain the vaccine cold chain will ultimately ensure that potent vaccine is administered to your patients.
Cold chain
Ottawa Public Health's Vaccine Distribution Room ensures that each facility in the city of Ottawa storing publicly funded vaccines follow appropriate storage and handling of vaccines. Ottawa Public Health staff conducts annual visits to each facility to ensure that the refrigerators are maintained at the appropriate temperature and that facility staff record these temperatures on an ongoing basis.
What is "Cold Chain" and why is it important?
Cold chain is the maintenance of vaccines at the appropriate temperature range of + 2 ºC to + 8 ºC from the time the vaccines are manufactured until they are given to a patient.
Cold chain is important because vaccines are sensitive biological substances that can lose their strength and effectiveness if they are exposed to heat and/or direct sunlight. Freezing damages most vaccines. Exposed vaccines can result in a reduced immune response and/or increased local reactions. The loss of vaccine potency cannot be reversed.