COVID-19

Finding 'patient zero': the challenges of tracing the origins of coronavirus

Medics transport a man on a stretcher into an ambulance at the Life Care Center of Kirkland, a long-term care facility linked to several confirmed coronavirus cases, in Kirkland, Washington, U.S. March 3, 2020.  REUTERS/David Ryder     TPX IMAGES OF THE DAY - RC2MCF9808CI

Figuring out who those with COVID-19 have come into contact with hasn't been easy. Image: REUTERS/David Ryder TPX IMAGES OF THE DAY - RC2MCF9808CI

John Letzing
Digital Editor, Strategic Intelligence, World Economic Forum
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Spread of COVID-19 globally. Image: World Economic Forum
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