It’s only half an hour long and he speaks clearly in lay terms about Covid-19 immunity. Despite the fact that he is a research scientist describing himself as a “deeply experienced immunology, pulmonology type of research person”, it does not seem especially difficult to follow what he says.
Nothing he says is scarey, instead it seems highly reassuring, quite the opposite of what we are being told to feel by most media outlets. Nothing he says is untrue, confirming things I learned during and since studying a Master of Public Health and Tropical Medicine 20 years ago. Yet this video has to be viewed at a Facebook link because YouTube removed him. Which must be a purely political decision? Which makes no sense?
Free Citizens 
I have bookmarked and will reblog the main article! Thanks for finding this!
The medical people are the experts in this area in contrast to the flannel from the political class.
Yes, especially those, like this doctor, who are honest and not sold out to the powers that be!