© Provided by The Independent Oxford vaccine director on jab's impact on transmission
The Oxford coronavirus vaccine appears to offer 76 per cent protection for up to 12 weeks after the first dose, according to new analysis.
Researchers at the University of Oxford said their vaccine, developed with pharmaceutical company AstraZeneca, may also reduce transmission of the virus by 67 per cent.
The vaccine's effectiveness in preventing Covid-19 disease rises to 82.4 per cent once a second dose is administered after three months, according to a pre-print paper.
A separate study also found coronavirus antibodies last for at least six months after infection for the majority of people who have had the virus.
The research by UK BioBank, the UK's major biomedical database and research resource, measured the levels of previous infection in various population groups across the UK and how long antibodies persisted in those who were infected.
Oxford vaccine director on jab's impact on transmission
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According to the study, 99 per cent of participants who tested positive for previous infection retained coronavirus antibodies for three months after being infected, while 88 per cent did so for the full six months of the study.