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The Importance of Accurate Temperature Measurement for Vaccine Storage

There are two key modes of failure in vaccine cold chain storage, and both can be prevented by keeping accurate temperature records.
The first is that vaccines exposed to too high or too low temperatures, for a long enough period to degrade potency, can be identified and removed from use.
The second is to prevent the unnecessary disposal of vaccine stocks that appear to have a suffered loss of potency, but are actually undamaged and will still provide effective immunisation.
The costs associated with the loss and replacement of compromised vaccines should not be underestimated. According to official figures, during 2018 vaccine wastage in the UK alone had a value of at least £6.3 million. Public Health England accepts this is likely to be underreported and thus the true financial cost even greater.