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What does the Moderna vaccine mean for the fight against Covid?

How does it work and how is it different from the Pfizer/BioNTech jab?Moderna Covid vaccine almost 95% effective, trials showCoronavirus – latest updatesSee all our coronavirus coverage
Moderna’s stage 3 trial involved more than 30,000 participants in the US. Photograph: Dado Ruvić/Reuters

As promising results are released from a second vaccine trial, we take a look at what this could mean in the battle against Covid-19.

What’s happened?

Early results from phase 3 clinical trials of a Covid-19 vaccine from the US-based company Moderna have been released. These trials are carried out in humans to assess how safe and effective a vaccine is. The Moderna trial involved more than 30,000 participants in the US split into two groups, with one

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