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AstraZeneca shares turn negative after Brazilian health authority says volunteer in Covid vaccine study dies
By Berkeley Lovelace & Berkeley Lovelace Jr.
COVID vaccine: Children left out of clinical trials, until now
By Karen Weintraub
Coronavirus vaccine: Oxford AstraZeneca trial volunteer dies in Brazil
By Carolyn Johnson & Terrence McCoy
Oxford Developed Covid Vaccine, Then Scholars Clashed Over Money
By Stu Woo & Jenny Strasburg