SIIRH2020 (an ECIR2020 workshop) has more than 50 participants and all talks are now available, including the keynote talks: COVID-19 Open Research Dataset (CORD-19) by Kyle Lo and Lucy Lu Wang; CoronaTracker by Cher Han Lau; and BioASQ by George Paliouras.
https://www.youtube.com/playlist?list=PL6RYRv3A1tLwpD4aTbSVraUZNITbkRxZd