How is Opisthorchis Viverrini transmitted?

The trematode Opisthorchis viverrini is a fish-borne fluke that is commonly transmitted by ingesting raw fish containing infective metacercariae that excyst in the duodenum and migrate to the bile ducts where the adult worms reside.

How is Opisthorchis Felineus treated?

Praziquantel or albendazole are the drugs of choice to treat Opisthorchis infection.

How is Opisthorchis diagnosed?

Diagnosis of Opisthorchis infection is based on microscopic identification of parasite eggs in stool specimens. Safe and effective medication is available to treat Opisthorchis infections. Adequately freezing or cooking fish will kill the parasite.

What are the parasitic features of Opisthorchis?

In mild cases, symptoms may include indigestion, abdominal pain, diarrhea, or constipation. Signs and symptoms are related to inflammation and blockage of the bile ducts that may come and go. In severe cases, abdominal pain, nausea, and diarrhea can occur.

What disease is caused by Opisthorchis Viverrini?

Opisthorchiasis is a parasitic disease caused by species in the genus Opisthorchis (specifically, Opisthorchis viverrini and Opisthorchis felineus). Chronic infection may lead to cholangiocarcinoma, a malignant cancer of the bile ducts.

What parasite causes cholangiocarcinoma?

Two parasites are commonly involved. One is Opisthorchis verrini, which is found in Southeast Asian countries, including Thailand, Lao People’s Democratic Republic, Vietnam, and Cambodia. The other is Clonorchis sinensis, which is common in rural areas of Korea and China.

What is the location of Opisthorchis Felineus in the human?

Opisthorchis viverrini, Opisthorchis felineus After ingestion, the metacercariae excyst in the duodenum and ascend into the biliary ducts and pancreatic ducts where they attach to the mucosa and develop into adults.

What disease is caused by Opisthorchis Felineus?

What is the difference between Opisthorchis and clonorchis?

sinensis (or Opisthorchis sinensis), also known as the Chinese liver fluke. It is endemic in East Asia (mainly in China, Japan, Korea, Taiwan, and Vietnam) [2], as well as far eastern Russia (figure 1) [3-5]. Clonorchis is a parasite of fish-eating mammals; dogs and cats are the most common reservoirs [6].

What is the infective stage of Opisthorchis viverrini?

The metacercarial stage is infective to humans and other fish-eating mammals, including dogs, cats, rats, and pigs. Fish contain more metacercaria from September to February, before the dry season, and this is when humans are usually infected. Infection is acquired when people ingest raw or undercooked fish.

What disease is caused by Opisthorchis viverrini?

What is the infective stage of Opisthorchis Felineus?

The cercariae then leave the snail, penetrate into susceptible fresh water fish, encyst in the muscle and develop into metacercariae, and infective stage, in six weeks. When ingested by man or animal the metacercariae excyst in the duodenum or jejunum and then migrate to the bile duct.

Is Opisthorchis endemic in the Philippines?

In the Philippines, endemic foodborne trematodes of public health concern include Paragonimus westermani, some members of Heterophyidae and Echinostomatidae, and Fasciola hepatica/ F. gigantica. Opisthorchis viverrini and Clonorchis sinensis have also been reported in the country.

What are signs of liver flukes?

Symptoms of Liver Fluke

• Enlarged liver.
• Eosinophilia.
• Itching.
• Fever.
• Chills.
• Abdominal discomfort or pain.
• Malaise.

How long do cholangiocarcinoma patients live?

Cholangiocarcinomas arise from the epithelial cells of intrahepatic and extrahepatic bile ducts. They generally have a very poor prognosis. Many studies report a dismal median survival of approximately 6 months.