Harm of blood worm (schistosomiasis)
Some people often confuse red worms with the larvae of Schistosoma japonicum (Schistosoma japonicum), which is often parasitic in freshwater snails and cannot be observed by human eyes. Red worms are parasitic targets of Schistosoma japonicum, but when they sense that warmer-blooded creatures (such as humans) pass by, they will swim to new hosts, cross the skin, enter the human body, and finally live in the intestine or bladder. This worm can survive and reproduce in the human body for as long as 12 years, and gradually destroy human organs in the process. It sounds like a science fiction movie, but in fact, this disease is not uncommon. Nearly 70 million people in the world suffer from schistosomiasis, and most of them will die from this disease, and dozens of people will die from eating snails with schistosomiasis.