New York City Mayor Bill de Blasio on Tuesday praised the Trump administration for its "valuable role" in getting a coronavirus vaccine out quickly -- after President-elect Joe Biden said the administration deserves credit. "In terms of getting the vaccine, yes, I do think the president and his administration contributed substantially to getting a vaccine in this kind of time frame," he said. "That's a really good thing." De Blasio was asked by Fox News about comments Biden had made when receiving the vaccine on Monday.The president-elect said at the time: "I think the administration deserves some credit for getting us off the ground with Operation Warp Speed," referring to the federal initiative to get the vaccine out.