Trematoda is a class of flatworms known as flukes or trematodes. [1] They are obligate internal parasites with a complex life cycle requiring at least two hosts. The intermediate host, in which asexual reproduction occurs, are mollusks and usually a snail. The definitive host, where the flukes sexually reproduce, is a vertebrate. [1]

2018年11月13日 · A liver fluke is a parasitic worm. You can become infected after eating contaminated raw or undercooked freshwater fish or watercress. Infections are usually treated with a drug called ...

fluke, any member of the invertebrate class Trematoda (phylum Platyhelminthes), a group of parasitic flatworms that probably evolved from free-living forms millions of years ago. There are more than 10,000 species of flukes. They occur worldwide and range in size from about 5 millimetres (0.2 inch) to several centimetres; most do not exceed 100 ...

Flukes are parasitic flatworms. There are many species of flukes. Different species tend to infect different parts of the body. The life cycle of flukes is complex. It typically involves snails that live in fresh water. Infected snails release immature flukes that swim in the water (cercariae).

2022年3月23日 · Schistosomiasis is an infection caused by trematodes (flukes). These schistosomes (also called blood flukes) are parasitic flatworms that belong to the genus Schistosoma. Parasites are creatures who live in or on another organism (host) and …

Flukes are parasitic flatworms that infect the blood vessels, gastrointestinal tract, lungs, or liver. They are often categorized according to the principle organ system they invade: Clonorchis sinensis, Fasciola hepatica, and Opisthorchis species: Liver and bile ducts

2024年9月6日 · Liver flukes are parasites that can infect humans and cause liver and bile duct disease. There are two families of liver flukes that cause disease in humans: Opisthorchiidae (which includes species of Clonorchis and Opisthorchis) and Fasciolidae (which includes species of …

Usually, intestinal fluke infections cause no or mild symptoms. But if the infection is severe, people may have abdominal pain, diarrhea, and fever. Sometimes the flukes prevent foods from being absorbed normally (called malabsorption) or …

2024年7月24日 · Liver flukes are parasitic worms that can infect your liver, gallbladder and bile ducts. You can get them from eating uncooked or undercooked freshwater fish or watercress. Symptoms include fever, belly (abdominal) pain, nausea and vomiting.

2024年3月14日 · The parasite, Heterobilharzia americana, is a flatworm commonly referred to as liver fluke. Previously found almost exclusively in Texas and other Gulf Coast states, it has never been reported this far west. The worm can cause canine schistosomiasis, an illness that impacts the liver and intestines of dogs.