Nature at work...it's like watching those time lapse vid of decomposing animals, except this is a human. Still flesh. And if you have ever seen a deer or dead animal with maggots in it/on it, same thing...in a sense. A human is still flesh, and diseased, rotting, or open wounds is still flesh to a maggot, be it human, or otherwise.
But, one thing, I thank my lucky stars that I am in America...how many people are going to just sit there and let maggots devour their calves?
Maggots, Nature's clean up crew. The only thanks they want is a free meal.