There isn\u2019t a corner of the world not affected by COVID-19. But what is it? Where did it come from? And how does our immune system fight it? Join Maggie (14) and Jessica (13) in conversation with Immunologist Dr Megan Macleod and Infectious Disease Expert Professor Emma Thomson from the Centre for Virus Research at the University of Glasgow. \n\nPlease note: this interview was recorded in Spring 2021.