To everyone suddenly thinking about antibodies vs T-cells vs whatever else, the podcast "This Week In Virology" discusses some of the difficulties at https://www.microbe.tv/twiv/twiv-602/ (discussion with Stanley Perlman). A number of other episodes also hit on coronavirus. Listen while you're walking the dog.

Another fun seminar is this one by Prof Pamela Bjorkman at Caltech; it's useful to watch the slides with at least one eyeball so not for dog-walking. https://www.youtube.com/watch?v=OBcc_dk9Q9U