Podcasts Health Health Check T-cell Covid protection before the pandemic

T-cell Covid protection before the pandemic

Published: Nov. 17, 2021, 9 p.m.

New research on how some people had a level of Covid immunity before the pandemic started. Blood samples showed hospital staff being monitored in the first wave already had protective \u2018killer\u2019 T-cells probably from exposure to other viruses related to the one that has swept the globe. The difference between antibodies to an infection and antibodies caused by a vaccine. And the extraordinary story of a woman who rid her body of HIV.

Presenter: Claudia Hammond\nProducer: Erika Wright

(Picture: Microbiologist studying coronavirus. Photo credit: Janiecbros/Getty Images)