One year into the COVID-19 pandemic, doctor reflects on medical advances and the pandemic's lesso…

One year into the COVID-19 pandemic, doctor reflects on medical advances and the pandemic's lesso…

March 11 marks one year since the World Health Organization declared COVID-19 a global pandemic. Dr. Leo Nissola, a physician and immunotherapy specialist, spoke with Anne-Marie Green and Vladimir Duthiers on CBSN about vaccines, the lessons of the past year and the Centers for Medicare and Medicaid Services' new guidance that people can visit their loved ones in nursing homes. CBSN is CBS News’ 24/7 digital streaming news service featuring live, anchored coverage available for free across all platforms. Launched in November 2014, the service is a premier destination for breaking news and original storytelling from the deep bench of CBS News correspondents and reporters. CBSN features the top stories of the day as well as deep dives into key issues facing the nation and the world. CBSN has also expanded to launch local news streaming services in major markets across the country. CBSN is currently available on CBSNews.com and the CBS News app across more than 20 platforms, as well as the Paramount+ subscription service. Subscribe to the CBS News YouTube channel:    / cbsnews​   Watch CBSN live: http://cbsn.ws/1PlLpZ7c​ Download the CBS News app: http://cbsn.ws/1Xb1WC8​ Follow CBS News on Instagram:   / ​   Like CBS News on Facebook:   / cbsnews​   Follow CBS News on Twitter:   / cbsnews​   Subscribe to our newsletters: http://cbsn.ws/1RqHw7T​ Try Paramount+ free: https://bit.ly/2OiW1kZ For licensing inquiries, contact: [email protected]