[The Guardian] Coronavirus vaccine: when will it be ready?

Coronavirus vaccine: when will it be ready?

Human trials will begin imminently – but even if they go well, there are many hurdles before global immunisation is feasible

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Even at their most effective – and draconian – containment strategies have only slowed the spread of the respiratory disease Covid-19. With the World Health Organization finally declaring a pandemic, all eyes have turned to the prospect of a vaccine, because only a vaccine can prevent people from getting sick.

About 35 companies and academic institutions are racing to create such a vaccine, at least four of which already have candidates they have been testing in animals. The first of these – produced by Boston-based biotech firm Moderna – will enter human trials imminently.

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