Surgeon General Vivek Murthy urged social media companies Thursday to curb pandemic-related misinformation, saying vaccine misinformation is a factor in the country's slowing vaccination rates. What he's saying: "If we had had the pushback for vaccines the way we're seeing on certain media, I don't think it would've been possible at all to not only eradicate smallpox, we probably would still have smallpox,” Fauci told CNN's Jim Acosta. "And we probably would still have polio in this country if we had the kind of false information that's being spread now."