"Most people think that parasitic infections only occur in third world countries, or the tropics. Nothing could be further from truth. Because of this misconception, many people have overlooked the possibility of parasites as being present in their own bodies. Most people recognize the names of parasites such as Tapeworms and pinworms, but they are completely unaware of the variety and quantity present in the population as a whole. These potentially harmful parasites, and their affects, are increasingly prevalent in the United States. parasites should be an important part of every medical evalutaion in the care of their patients."
You can overlook the fact that flukes are present in human beings in the United States and let them feed off your insides if you like, but there are those of us who prefer researching and trying ways to rid ourselves of them!!!!!
I found the above link after only a few minutes of research. I'm certain you can find more and in abundance if you wish to give some time to researching the web.
Flukes are alive and well IN MOST OF US in the United States and one of the main places they like to play is in our livers!