Then every time that individual is stung, their immune system has a more violent reaction to the venom that is introduced. This is just the opposite of what happens to people that are not prone to anaphylaxis. They have a mild reaction the first time they are bitten. Their immune system then goes crazy every time they see that venom. No, in many parts of the world insects are a major part of the diet.
Many severe allergies are the result of breathing in broken up insects or insect parts.
There is no problem with eating insects though. If you have allergic reactions to insects, that can be a problem. Yellow Fever is a disease that is found in the American and African Tropics. The only way we get these cases in North America is if unvaccinated people go to the Tropics, get it and then come back to Florida. People who are living in Florida and are not travelling anywhere should not worry about Yellow Fever or the vaccine.