“The indication that virus carriage is reduced is also very encouraging.”
Stephen Evans, professor of pharmacoepidemiology at the London School of Hygiene and Tropical Medicine, said the extra data on the AstraZeneca vaccine is “very helpful”.
He said: “The data definitely provides some evidence to suggest that the eventual protection from two doses of this vaccine are not worsened by having a longer than 28- or 42-day period between doses and tend to confirm what had been shown before, that if anything the eventual efficacy was better.
“The data also do not provide any evidence that efficacy wanes after the first dose.”
The Oxford/AstraZeneca vaccine could be the holy grail in the fight against coronavirus, according to a leading pharmacologist. The preliminary results of a study conducted by researchers at the University of Oxford found the efficacy from two standard doses of the vaccine administered three months apart to be 82.4%. But it is the fact it also seems to dramatically cut transmission - by around 67 per cent - after just one dose that will mean lockdown measures can be lifted sooner, a former chair at the Faculty of Pharmaceutical Medicine said. Dr Gillies O’Bryan-Tear said the results, which have yet to be peer reviewed, were the first definitive estimate of the impact of vaccination on transmission rates.
A single dose of the Oxford/AstraZeneca vaccine stops transmission by two thirds, a new study suggests A single dose of the Oxford vaccine may reduce transmission of Covid-19 by two thirds, according to a new study which provides a major boost to the UK’s recommendation that the second jab should be delayed for up to 12 weeks. Researchers said that the first dose of the Oxford/AstraZeneca jab offers protection of 76 per cent up to three months and may reduce transmission by 67 per cent – with efficacy rising to 82.4 per cent after the second dose 12 weeks later. The data from the study by the University of Oxford, which has not yet been peer reviewed, supports the four to 12-week prime-boost dosing interval that many global regulators, including the UK’s, have recommended.
Picture: SARAH CALDECOTT JUST one dose of the Oxford vaccine may reduce transmission of Covid by two thirds, a new study has found as officials recommend that the second jab can be delayed for up to 12 weeks. Researchers said that the first dose of the Oxford/AstraZeneca jab offers protection of 76 per cent up to three months and may reduce transmission by 67 per cent – with efficacy rising to 82.4 per cent after the second dose three months later. The data from the study by the University of Oxford, which has not yet been peer reviewed, supports the four to 12-week prime-boost dosing interval that many global regulators, including the UK’s, have recommended.
Oxford vaccine stops you spreading coronavirus by 67 per cent
Before these results, little was known about how effective the Covid-19 vaccines were at preventing transmission of the disease.
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A single dose of the Oxford vaccine may reduce transmission of coronavirus by two thirds, according to a new study which provides a major boost to the UK’s recommendation that the second jab should be delayed for up to 12 weeks.