One dose of vaccine slashes risk of spreading Covid by up to HALF, major study reveals 

Not only does the jab reduce a person's chance of catching Covid in the first place, it greatly reduces their chances of passing it on, should they get infected. https://www.dailymail.co.uk/news/article-9518653/One-dose-vaccine-slashes-risk-spreading-Covid-HALF-major-study-reveals.html?ns_mchannel=rss&ns_campaign=1490&ito=1490