Can a genetically modified BCG vaccine protect us from coronavirus? | COVID-19 Special

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As scientists race to find a coronavirus vaccine, some researchers are pinning their hopes on vaccines that already exist: The BCG vaccine. It’s traditionally used against tuberculosis and has been shown to also protect against a range of other diseases. Researchers are now hoping that Covid-19 could be one of them. In this video we ask: To what extent could BCG tuberculosis vaccines be used against the new coronavirus?
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