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China's virus death toll revised up sharply after review
By Ken Moritsugu
U.S. Intelligence Sifts Evidence for Origins of Coronavirus
By Warren P. Strobel & Michael R. Gordon
Trump fans flames of Chinese lab coronavirus theory during daily briefing
By David Smith
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China's Wuhan raises coronavirus death toll by 50% after city revises figures
By Nee Lee, Lilian Wu & Yen Nee Lee
U.S. intelligence community still investigating origins of COVID-19 outbreak, including whether it was a lab accident
By Olivia Gazis
Hunt for origin of coronavirus raises new US-China tensions
By Katrina Manson, Sun Yu & Clive Cookson
US explores possibility that coronavirus spread started in Chinese lab, not a market
By Kylie Atwood, Josh Campbell & Evan Perez