If you can find a claim from any of the vaccine manufacturers that these ones have been shown to prevent transmission I'd like to see it. Will covid-19 vaccines save lives? Current trials aren’t designed to tell us https://www.bmj.com/content/371/bmj...currently,interrupt transmission of the virus. Yet the current phase III trials are not actually set up to prove either (table 1). None of the trials currently under way are designed to detect a reduction in any serious outcome such as hospital admissions, use of intensive care, or deaths. Nor are the vaccines being studied to determine whether they can interrupt transmission of the virus.