I will look at that. Thank you. I agree that the Spanish flu is not what it seems and that many if not most of the people reputed to have died from flu likely died from something else (e.g. secondary bacterial infections, etc.) Your profile lists homesteading as an interest, and I'm pretty sure that is why I originally followed you. I'm also working on homesteading. We harvested dozens of pears, asian pears, shallots, onions, potatoes & zucchini this past weekend. I am lucky to have a horticulturist as my beloved partner. In the spirit of curiosity & improved plant yields, consider that there are plant pathogens that have been classified as viruses (various mosiac, wilt, leaf roll, leaf curl, etc.) that unfortunately infect tomatoes, potatoes, beans, cucumbers, peppers, spinach, etc. There are empirically determined mitigation strategies such as crop rotation, sanitizing of tools, reduction of insect vectors and pests, etc. I am trying to learn more about these to improve my ability to produce food. The narrative around plant pathogens is less charged at the moment and may provide another perspective to learn and understand about this class of plant diseases. Thank you for engaging respectfully and I agree that we are all free to believe what we wish. Be well.

Terrain theory applies to all living beings. The original definition of a virus is poison. So poisons and toxins in the soil will present as "virus" and disease in the plant. Healthy soil doesn't express "viruses and disease" in its plants because its in healthy homeostasis. Just build microbially rich, in balance, mineral rich soil that can facilitate free-flowing cation exchange and you'll have healthy plants. Everything comes back to the root cause of toxicity and deficiency, so correcting symptoms just suppresses the issues and makes root cause solutions harder to assess and implement Biochar, sea minerals, paramagnetic rock, molasses, kelp, healthy compost, and compost teas will all strengthen and enhance your soils "terrain" and then you won't have to waste your time diagnosing disease and pest issues. Also electroculture helps- don't know why or how but it does https://www.thespruce.com/what-is-electroculture-gardening-8697899