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The Guardian - UK
The Guardian - UK
Lifestyle

We know some bacteria are beneficial to us, but are there any 'friendly' viruses?

Electron microscope image of novel coronavirus, which causes Covid-19.
Not good at all ... electron microscope image of novel coronavirus, which causes Covid-19. Photograph: NIAID-RML/Reuters

We have learned that not all bacteria are bad for us, but are there any “friendly” viruses?

Stephen Adamson, London SW16

Post your answers – and new questions – below or email them to nq@theguardian.com

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