Study finds COVID-19 vaccine might reduce virus transmission

Pharmacist Bhaveen Patel administers a dose of the Oxford/AstraZeneca covid vaccine to Joshua Labor at a coronavirus vaccination clinic held at Junction Pharmacy in Brixton, London, Thursday, Jan. 28, 2021. (Dominic Lipinski/PA via AP)

AstraZeneca’s COVID-19 vaccine shows a hint that it might reduce transmission of the coronavirus and offers strong protection for three months on just a single dose, researchers said Wednesday in an encouraging turn in the campaign to suppress the outbreak.