Casey is right, most of these animal sicknesses come from poor conditions the animals live in, also they're fed animal byproducts which doesn't help.
I eat meat, I'm maybe not a carnivore, but I do enjoy some meat in my diet, but I tend to get more expensive meats where I know the animal was actually fed grains and grass, and not some other animal lol and had good living conditions like any other cow on a farm, etc