Study finds COVID-19 vaccine may reduce virus transmission

A new study may help answer answer one of the big open questions about the campaign to suppress the coronavirus outbreak. Researchers from Oxford University say AstraZeneca’s COVID-19 vaccine does more than protect people from falling seriously ill — it also appears to reduce transmission of the virus. The study released on Wednesday also suggested that a single dose of the AstraZeneca formula provides a high level of protection for 12 weeks, which could vindicate the British governm