As the U.S. shatters another daily record with nearly 134,000 new coronavirus cases on Monday, new details are emerging about Pfizer’s coronavirus vaccine, said to be 90 percent effective in trials. “It is obviously a big deal,” Dr. Anthony Fauci said. NBC’s Miguel Almaguer reports for TODAY. » Subscribe to TODAY: http://on.today.com/SubscribeToTODAY » Watch the latest from TODAY: http://bit.ly/LatestTODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: http://on.today.com/ReadTODAY Find TODAY on Facebook: http://on.today.com/LikeTODAY Follow TODAY on Twitter: http://on.today.com/FollowTODAY Follow TODAY on Instagram: http://on.today.com/InstaTODAY Follow TODAY on Pinterest: http://on.today.com/PinTODAY #AnthonyFauci #Pfizer #TodayShow Dr. Fauci Calls Pfizer Vaccine Results ‘Extraordinary’ As Coronavirus Cases Soar | TODAY