UPDATE: Only 50 people are known to have contracted COVID-19 more than once -- but new strains have medical experts on high alert

Press/Media

Period	21 Feb 2021

Media coverage

Title	UPDATE: Only 50 people are known to have contracted COVID-19 more than once -- but new strains have medical experts on high alert
Media name/outlet	TD Ameritrade
Country/Territory	United States
Date	21/02/21
URL	https://research.tdameritrade.com/grid/public/markets/news/story.asp?fromPage=results&docKey=1-SN20210221000685
Persons	Bruce Polsky,