Not the OP, but allow me to jump in. Two years ago, I ate something perhaps and I had a severe allergic reaction. I went from a perfectly healthy individual to

Not the OP, but allow me to jump in. Two years ago, I ate something perhaps and I had a severe allergic reaction. I went from a perfectly healthy individual to a familiar face in the ER in a matter of days (4 times there in a span of a month). I took prednisone for 6 months. All tests came fine. In the eyes of modern medicine, I was still a perfectly healthy individual. My doctor told me that that is the case with 95% of the people with chronic allergies - we simply don't know what's the root cause of their problem. In other words, the immune system is extraordinarily complex, and if you could avoid messing up with it, you should probably do that. Now, a vaccine does exactly that. It plays some games with the immune system. Sometimes the outcome of the game is weird, just take a look at [1]. Here's a random snippet: "Encephalitis (severe brain reaction), which can lead to permanent brain damage (as many as 1 per 83,000)." Variolation as opposed to vaccination, has the advantage that the only side effect is that you can get the disease itself, but no weird interactions with the immune system. All right, in the case of Covid19, the disease can have such weird interactions, so it's difficult to say it's an obviously better alternative, but still, that's the main idea. [1] https://www.historyofvaccines.org/content/articles/vaccine-side-effects-and-adverse-events https://www.historyofvaccines.org/content/articles/vaccine-s...