Covid-19: What do we know about the late stage vaccine candidates?

As some phase III trials of covid-19 vaccine candidates report early and unpublished results, Elisabeth Mahase summarises what we know so far The ChAdOx1 nCoV-19 has been tested across the world, with trials starting in the UK and branching out to Brazil, South Africa, and the US. Phase II results, published in the Lancet , found that the vaccine produced a similar immune response in old and…

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