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In November 2020, it was heralded as “a vaccine for the world” as it was far cheaper and easier to store than other Covid vaccines. The pharmaceutical giant AstraZeneca had agreed to manufacture it en masse.
Initially, it was the cornerstone of the UK’s plans to vaccinate our way out of lockdown.
“The truth is it made an enormous difference, it was what lifted us out of the catastrophe that was unfolding at the time, combined with the other vaccine from Pfizer,” said Prof Adam Finn, from the University of Bristol.
However, its reputation was dented as unusual blood clots emerged as a rare side effect of the vaccine, and the UK turned to alternatives.
In a statement, AstraZeneca said: “According to independent estimates, over 6.5 million lives were saved in the first year of use alone.
“Our efforts have been recognised by governments around the world and are widely regarded as being a critical component of ending the global pandemic.”
It said the development of new vaccines that more closely match the mutated forms of Covid that are now circulating meant there was a “surplus of available updated vaccines”, leading to a “decline in demand” for its vaccine which is “no longer being manufactured or supplied”.
Prof Finn added: “I think the withdrawal of the vaccine simply reflects it’s no longer useful.
“It’s turned out that this virus is very agile and it’s evolved away from the original vaccines, so they have in a sense become irrelevant and only the reformulated vaccines are likely to be being used now.”
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