You're obviously trolling since you're pretending you don't already know. He spread it to millions of Americans, by lying about it and encouraging his followers not to wear masks, not to mention all his sycophants who caught it by licking his boots. Are you one of them?
"He spread it to them" means that he physically transmitted it to them. He did not. Pointing out your misuse of the English language does not make me a sycophant.