Listen from 20mins if you want to skip the beginning, its very technical.
And apparently the video link is not working so go to Youtube and type in
Professor Clancy, long covid and immunity
A great interview with prof. Robert Clancy. He is a retired Australian clinical immunologist in the field of mucosal immunology. He is known for his research and development of therapies for chronic obstructive pulmonary disease (COPD), commonly known as emphysema. Clancy developed the vaccine Broncostat at the University of Newcastle in 1985. He is a consultant physician and pioneering immunologist, emeritus professor of pathology, doctor of medicine, doctor of philosophy and doctor of science, author, teacher and broadcaster. He is a fellow of the Royal Australasian College of Physicians (FRACP) and the Royal College of Pathologists of Australia (FRCPA). He was admitted as a Member of the Order of Australia (AM, Order of Australia) in 2005 for service to cartography as a collector of early maps of Australia and to the field of immunology. Clancy: 'A study as recently as 2 days ago showed that in a third of the persons whith Long-Covid they still find mRNA-molecules coding for the spike protein - and the spike protein itself - in the blood up to 12 months after they got Long-Covid, but not in persons who don't have Long-Covid.'