Abstract:We present a comprehensive analysis of antibody and cellular responses in children aged 12-16 years who received COVID-19 vaccination with ChAdOx1 (n=6) or mRNA vaccine (mRNA-1273 or BNT162b2, n=9) using a 12-week extended-interval schedule. mRNA vaccination of seropositive children induces high antibody levels, with one dose, but a second dose is required in infection-naïve children. Following a second ChAdOx1 dose, antibody titres were higher than natural infection, but lower than mRNA vaccination. Vaccinati… Show more
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