The insistent downplaying of natural immunity reminds me of an old soviet scifi novel, https://en.wikipedia.org/wiki/The_Air_Seller https://en.wikipedia.org/wik

The insistent downplaying of natural immunity reminds me of an old soviet scifi novel, https://en.wikipedia.org/wiki/The_Air_Seller https://en.wikipedia.org/wiki/The_Air_Seller, if one can get past the on-the-nose soviet motives.