Newshour - Covid-19: Oxford-AstraZeneca vaccine shown to be highly effective - 大象传媒 Sounds
Newshour - Covid-19: Oxford-AstraZeneca vaccine shown to be highly effective - 大象传媒 Sounds
Covid-19: Oxford-AstraZeneca vaccine shown to be highly effective
Protection was 90% for those given a half-sized first dose and a full-sized second dose