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The Guardian - UK
The Guardian - UK
Lifestyle

What does the cold virus get in return for making its host feel grotty?

Common cold virus ... what’s it up to?
Common cold virus ... what’s it up to? Photograph: AP

What does the cold virus that I’m carrying get in return for making me, its host, feel grotty? Are there any viruses that can improve human wellbeing?

Robin Tebbutt, Monmouthshire

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

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