NOTE FROM TED: Research around COVID-19 remains an ongoing and evolving field of study. TEDx events are independently organized by volunteers. The guidelines we give TEDx organizers are described in more detail here: http://storage.ted.com/tedx/manuals/tedx_content_guidelines.pdf
The speaker describes how the immune system reacts to fight Covid 19. Fr John Therry, Balmain, NSW, Year 5 student This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx
