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<p>Comparisons between vaccines administered across the world are complex due to differences
in vaccine trials and monitoring. When a vaccine receives a marketing authorisation
or conditional marketing authorisation from a medicines regulator, certain factors
or conditions are specified by the national regulator in order to ensure the product
is of the highest quality, safety and efficacy for authorisation.</p><p>We are currently
considering which regulators and associated vaccines we would be confident to recognise
in the United Kingdom.</p>
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