We observed higher binding antibody responses among participants with prior COVID-19 exposure after 28 days from baseline and a trend towards significance up to day 70, and no differences thereafter.
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Safety of AZD1222 COVID-19 vaccine and low Incidence of SARS-CoV-2 infection in Botswana following ChAdOx1(AZD1222) vaccination: A single-arm open-label interventional study - final study results.
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