Created at	Source	Raw Value	Validated value
Nov. 8, 2021, 3:35 p.m.	irct	The effectiveness of the vaccine in preventing symptomatic Covid-19 infection	The effectiveness of the vaccine in preventing symptomatic Covid-19 infection
April 25, 2021, 1 a.m.	irct	The effectiveness of the vaccine in preventing symptomatic Covid-19 infection The effectiveness of the vaccine in preventing severe form of Covid-19 The effectiveness of the vaccine in death from Covid-19	The effectiveness of the vaccine in preventing symptomatic Covid-19 infection The effectiveness of the vaccine in preventing severe form of Covid-19 The effectiveness of the vaccine in death from Covid-19