Hepatic distomatosis: transmission and manifestation of this parasitosis
Hepatic distomatosis is an infectious disease transmitted by Clonorchis sinensis, a parasite belonging to the trematode family
The parasite lives, for the most part, in herbivorous animals and aquatic plants.
How hepatic distomatosis is transmitted
Humans are infected by eating vegetables, greens or crustaceans that have come into contact with water contaminated by the parasite.
Clonorchis sinensis, having introduced itself into the human organism, settles in the bile ducts, from where it reaches the intestinal canal to release its eggs.
There the eggs, facilitated by the environment, give rise to a miracidium which, in turn, infests Bythinia leachi (a freshwater mollusc, which acts as an intermediate host in this context).
Within this species, the worm develops to the adult stage (cercariae).
Some fish species, salmonids and cyprinids, in feeding on these molluscs facilitate the transmission of the parasite, which can also penetrate through the skin of the fish.
The last link in this chain of transmission is man, who ingests the parasite by consuming fish without proper cooking.
How liver distomatosis manifests itself
The parasite in contact with the bile ducts triggers biliary colic, bacterial infections and gallstones.
Some of the most important symptoms are
- abdominal pain
- mild fever
- jaundice and itching
- hives
- asthmatic crises
Therapy
The main route of transmission of the parasite is water; therefore, it is important to observe the most basic rules of hygiene.
The best possible therapy is proper prophylaxis, which includes adequate water purification before use and an absolute ban on eating uncooked shellfish, or any fish species.
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