Created at	Source	Raw Value	Validated value
Oct. 26, 2020, 11:31 p.m.	usa	Assess efficacy of the candidate ChAdOx1 nCoV-19 against COVID-19: Number of virologically confirmed (PCR positive) symptomatic cases;Assess the safety of the candidate vaccine ChAdOx1 nCoV: Occurrence of serious adverse events (SAEs)	Assess efficacy of the candidate ChAdOx1 nCoV-19 against COVID-19: Number of virologically confirmed (PCR positive) symptomatic cases;Assess the safety of the candidate vaccine ChAdOx1 nCoV: Occurrence of serious adverse events (SAEs)