@miriam98 - Yeah, it doesn’t just happen in meat plants however. Sometimes you find these conditions in restaurants.
There was this one restaurant I went to where I used to eat sushi and dim sum all the time. One day I was in there and believe it or not, a bird was flying around in the restaurant. I heard the Chinese chefs in the back screaming to get the bird out.
Days later I saw a notice posted on the doors of the restaurant saying that the place had been temporarily closed by order of the food safety inspector. That was the last time I ever ate at that place.