Those shots are not vaccines. That is the point. They do not prevent covid and they have horrid side effects. If this guy gets that shot, he will need to get another and then another booster. There is no end to the “jabs” and they do cause clotting and other dangerous health issues.
We didn’t have any side effects other than a sore arm, same for most people we know with a few exceptions of feeling under the weather for a few days