Here are Fauci's comments when Patty Murray gave him an actual chance to respond without being interrupted. He didn't bad-mouth Paul to get his point across. Fauci has class, Paul doesn't even have a passing familiarity with it. More of the conversation at the link.
"When you have a variant, you have an immunity that you get … against a wild type, you get a certain level of antibody that’s specific for a particular viral strain. If there’s a circulating variant, you don’t necessarily have it. You have some spillover immunity, to be sure, but you diminish by anywhere from two- to eightfold, the protection. So the point I’m saying is that there are variants now circulating.https://tinyurl.com/ydtguac6
The point that Senator Paul was making was that if you look at wild type only, there is some clear-cut credence to what he’s saying. But we are living right now in a situation where we’re having a dominance of ... the original U.K. [variant]. We have a very troublesome variant in New York City. ... We’ve got two variants in California. ... And we have a number of others. So we’re not dealing with a static situation of the same virus. That was the only point I’m making."
Right, but all the variants we know of now current vaccines and antibodies protect us from. he forgets to mention that and is playing and endless "what if" game. Given his past and admitted lies, I would seek confirmation of any claim he makes