Are viruses alive? Dr Cliona O'Farrelly is Professor of Comparative Immunology in Trinity College Dublin. She explains how viruses work in this episode. Dr O'Farrelly also explores what happens to viruses in a Covid-19 victim after they have died and how we have to be extra careful around the bereaved as their immune systems can also be affected by grief.
[Image from US National Institute for Allergy and Infectious Diseases showing SARS-CoV2 covering a human cell]
