3Blue1Brown is another math channel on youtube.  This video goes much further than Numberphile in covering multiple variables (and different rates) and their effects on the spread of disease, and finishes with the combinations.  It really brings home the importance of isolation, quarantine and all the other things the medical community have been stressing.

Both 3Blue1Brown and Numberphile reached the same peak of infection (roughly 75-80%) in a scenario where no measures are taken and the virus spreads unchecked, so they’re likely working from the same formulae.