What does the cold virus get in return for making its host feel grotty | Notes and queries

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific concepts

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

Continue reading... November 01, 2017 at 05:00PM