The most informative videos on COVID-19 I've found. Episode 1: https://youtu.be/d6MZy-2fcBw Episode 2: https://youtu.be/lGC5sGdz4kg Episode 3: https://youtu.be/VK0Wtjh3HVA Episode 4: https://youtu.be/cwPqmLoZA4s A background paper from this researcher: https://journals.plos.org/plosmedicine/article/file?type=printable&id=10.1371/journal.pmed.0020124