Here's a little more about AstraZeneca's vaccine announcement:
It's marketing - not science.
In other words, a mistake that never should have happened, seeing as how we are talking about experimental chemicals being injected into people’s bodies, miraculously bumped AstraZeneca’s trial results right up there with its competitors at Pfizer and Moderna, which have been hogging most of the spotlight.
Be careful how they use the numbers to falsely make claims: