The U.S. Food and Drug Administration (FDA) only required that drugmakers report a lower bound of confidence interval for efficacy, which allows drugmakers to say they cannot report an accurate effectiveness estimate (i.e., a small confidence interval) because they tested it in so few people. “As long as there’s a 95 percent chance that it’s at least 20 percent effective, that’s all we’re [the FDA] shooting for…"
The story of vaccines is all games, almost from their inception, and that story hasn't changed. "A 95% chance that something is 20% effective"?!? Sounds like an organization that's really interested in keeping people healthy, right?