Strains that result in no symptoms in animals can make persons sick, and vice versa. If existing in foods, it does not usually have an affect on the style, odor, or physical appearance of the food items. The germs are in the intestinal tracts of contaminated animals and humans. https://sites2000.com/story9494243/the-single-best-strategy-to-use-for-example-of-botulinum-toxin-poisoning