On the under-explored promise of the immune response in your nose

WHILE everyone celebrated this month’s news that not one but two experimental vaccines against Covid-19 have proved at least 90% effective at preventing disease in late-stage clinical trials, research into understanding how the Sars-CoV-2 virus, which causes Covid-19, interacts with the human immune system never paused…

Illustration by James Melaugh for The Guardian

This story first appeared in The Observer on 22 October 2020. To continue reading, click here.