One Covid vaccine cuts infection rate in all age groups
Real-world data found the AZ and Pfizer jabs worked equally well in over-75s and younger people. …
Prof Sarah Walker, chief investigator on the studies, from the University of Oxford, said: “We don’t yet know exactly how much of an antibody response, and for how long, is needed to protect people against getting Covid-19 in the long term – but over the next year, information from the survey should help us to answer these questions.”
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