Fluke

Liver fluke is a parasite that infects the liver and bile ducts of various animals, including humans.
It can cause a disease called fascioliasis, which can damage the liver and cause abdominal pain, fever, and jaundice.
Liver flukes are mainly found in areas where sheep, cattle, and goats are raised, such as Asia, Africa, Australia and America.

Blood fluke is another parasite that infects the blood vessels of humans and animals.
It can cause a disease called schistosomiasis, which can affect the urinary tract, intestines, liver, spleen, and lungs.
Blood flukes are transmitted by freshwater snails, and are endemic in tropical and subtropical regions, such as Africa, Asia, and South America.

Lung fluke is a parasite that infects the lungs of humans and animals.
It can cause a disease called paragonimiasis, which can cause cough, chest pain, and bloody sputum.
Lung flukes are acquired by eating raw or undercooked freshwater crabs or crayfish, and are prevalent in East and Southeast Asia, Africa, and South America.