Vaccine Front-Runner Held Back by China’s Spat With Canada
Ampoules containing a component of the ‘Gam-COVID-Vac’ Covid-19 vaccine in Zelenograd, Russia. (Photographer: Andrey Rudakov/Bloomberg)

Vaccine Front-Runner Held Back by China’s Spat With Canada

(Bloomberg) -- One of the world’s fastest-moving efforts to develop a Covid-19 vaccine is falling behind rivals, its advance appearing to be stymied by political tensions between China and Canada a...
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