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Australian scientists urge pause on deployment of AstraZeneca vaccine over efficacy concerns, suggest Pfizer or Moderna instead
Scientists in Australia have called for a halt to the rollout of the AstraZeneca vaccine, claiming recent data has cast doubt on the inoculations ability to create herd immunity.
The scientists pointed to data from a study published in the Lancet last month that found the British-Swedish vaccine had only 62 percent efficacy, compared with over 90 percent for the Pfizer-BioNTech alternative.
A large-scale trial in the UK and Brazil reported a 62 percent effectiveness for those who were vaccinated with two full doses of the AstraZeneca vaccine.
Australia has already purchased 53 million doses of the AstraZeneca vaccine, however.
On Wednesday, there were calls to delay the rollout, with Professor Stephen Turner, president of the Australian and New Zealand Society for Immunology (ASI), questioning its ability to “to provide herd immunity”.