March 9, 2026 - PARASITES - and A MUST EVAUATION AND THERAPY –
March 9, 2026 Puzzle Piece
PARASITES - and A MUST EVAUATION AND THERAPY –
Recently, I listened to a podcast from two parasitologists this that demonstrated what I have been testing, treating, and teaching for most of my 55 years of practice. There are very few of us that do not have some type or types of parasite/s in us. Those of you that allow your dogs and/or cats sleep with you are almost certain to be infested. Some parasites come out the rectum of animals and night and seek out a new port of entry.
OHS’s Opti-Para is the most updated of the 4 generations of anti-parasitic I have formulated. It is the best of the best I have utilized. OHS also has a pearl of Black Seed Cumin Oil that is effective in parasites and Long Haul Covid. Together with the Opti-Para, we have seen previously almost hopeless cases turn around.
This parasite information is listed from the Wikipedia.
Clonorchis sinensis
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From Wikipedia, the free encyclopedia
Clonorchis sinensis![]() |
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| An adult Clonorchis sinensis has these main body parts: oral sucker, pharynx, caecum, ventral sucker, vitellaria, uterus, ovary, Mehlis' gland, testes, excretory bladder. (H&E stain) | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Platyhelminthes |
| Class: | Trematoda |
| Order: | Plagiorchiida |
| Family: | Opisthorchiidae |
| Genus: | Clonorchis |
| Species: | C. sinensis |
| Binomial name Clonorchis sinensis Looss, 1907 |
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Clonorchis sinensis, the Chinese liver fluke, that belongs to the class Trematoda, phylum Platyhelminthes. It infects fish-eating mammals, including humans. In humans, it infects the common bile duct and gall bladder, feeding on bile. It was discovered by British physician James McConnell at the Medical College Hospital in Calcutta (Kolkata) in 1874. The first description was given by Thomas Spencer Cobbold, who named it Distoma sinense. The fluke passes its lifecycle in three different hosts, namely freshwater snail as first intermediate hosts, freshwater fish as second intermediate host, and mammals as definitive hosts.
Endemic to Asia and Russia, C. sinensis is the most prevalent human fluke in Asia and third-most in the world. It is still actively transmitted in Korea, China, Vietnam, and Russia. Most infections (about 85%) occur in China. The infection, called clonorchiasis, generally appears as jaundice, indigestion, biliary inflammation, bile duct obstruction, and even liver cirrhosis, cholangiocarcinoma, and hepatic carcinoma.
As a major causative agent of bile duct cancer, the International Agency for Research on Cancer has classified C. sinensis as a group 1 biological carcinogen in 2009.
Discovery
The symptoms of C. sinensis infection (clonorchiasis) have been known from ancient times in China. The earliest record is from corpses buried in 278 BC at Jiangling County of Hubei Province and the Warring States tomb of the western Han Dynasty. The parasite was discovered only in 1874, though, by James McConnell, a professor of pathology and resident physician at the Medical College Hospital in Calcutta. He recovered the fluke from a 20-year-old Chinese carpenter who died on 8 September 1874. On autopsy, he observed that the corpse had a swollen liver (hepatomegaly) and distended bile ducts, which he noted were blocked by "small, dark, vermicular-looking bodies." He recovered the vermicules (worms) and compared them with known flukes Fasciola hepatica and Distoma lanceolatum. He concluded that the new fluke was significantly different. He published his observations in the 21 August 1875 issue of The Lancet.
Description

Clonorchis sinensis under a light microscope.
The eggs are similar to those of other related flukes such as Opisthorchis viverrini and O. felineus, and are often confused during diagnosis. They small and oval in shape, measuring about 30 x 15 μm in diameter. They are sharply curved and with a clear convex operculum towards the narrower end. At the broader end is a stem-shaped knob. The miracidium can be seen inside the fertilised egg.
Life cycle

Lifecycle of C. sinensis
Production of eggs
The eggs of a C. sinensis are released through the biliary tract, and excreted out along with the faeces. The eggs are embryonated and contain the larvae called miracidia. Unlike most other flukes in which the miracidia undergo development and swim in water to infect suitable host, the eggs of C. sinensis are simply deposited in water. The eggs are then eaten by snails.
First intermediate host
Freshwater snail Parafossarulus manchouricus often serves as a first intermediate host.
Second intermediate host
When they detect fish, they attach themselves on the scales using their suckers. Boring their way into the fish's body, they penetrate into the fish muscle within 6 to 13 minutes. Within an hour of penetration, they develop hard coverings called cysts and become metacercariae. This protective cyst is useful when the fish muscle is consumed. The metacercariae gradually develop and become infective to their next hosts after 3 to 4 weeks.
Definitive host
Humans are the major definitive hosts. Infection occurs when raw or undercooked fish contaminated with the metacercariae is eaten. The cysts of the metacercariae are gradually digested by the human gastric acids, and upon reaching the small intestines, the entire cyst is lost. The free metacercariae penetrate the intestinal mucosa and enter the bile ducts. Migration into the bile ducts takes 1–2 days. They start feeding on the bile secreted from the liver, and gradually grow. They become adults in about a month, and start laying eggs. The average lifespan of an adult fluke is 30 years. An individual fluke can produce 4,000 eggs in a day.
Other definitive hosts are fish-eating mammals such as dogs, cats, rats, pigs,
Prevalence
C. sinensis is estimated to be the third-most prevalent worm parasite in the world. It is endemic to Russia, Japan, China,
The type of freshwater fishes and shrimp that are infected by C. sinensis contributes to the prevalence of infection. Commonly eaten fishes (e.g. C. idellus, C. auratus, H. nobilis, C. carpio, H. molitrix, and M. anguillicaudatus) were found to have the metacercariae when sampled from lakes, rivers, and markets. In total, almost 31 types of freshwater fish and shrimp were found to carry the parasite.
Effects on human health
Main article: Clonorchiasis
Dwelling in the bile ducts, C. sinensis induces an inflammatory reaction, epithelial hyperplasia, and sometimes even cholangiocarcinoma, the incidence of which is raised in fluke-infested areas.
One adverse effect of Clonorchis spp. is the possibility for the adult metacercaria to consume all bile created in the liver, which would inhibit the host human from digesting food, especially fats. Another possibility is obstruction of the bile duct by the parasite or its eggs, leading to biliary obstruction and cholangitis (specifically oriental cholangitis).
Unusual cases of liver abscesses due to clonorchiasis have been reported. Liver abscesses may be seen even without dilatation of intrahepatic bile ducts.
Symptoms
While normally asymptomatic, most pathological manifestations result from inflammation and intermittent obstruction of the biliary ducts. The acute phase consists of abdominal pain with associated nausea and diarrhea. Long-standing infections consist of fatigue, abdominal discomfort, anorexia, weight loss, diarrhea, and jaundice. The pathology of long-standing infections consist of bile stasis, obstruction, bacterial infections, inflammation, periductal fibrosis, and hyperplasia. Development of cholangiocarcinoma is progressive.
Diagnosis and treatment
Infection is detected mainly on identification of eggs by microscopic demonstration in faeces or in duodenal aspirate, but other sophisticated methods have been developed, such as ELISA, which has become the most important clinical technique. Diagnosis by detecting DNAs from eggs in faeces are also developed using PCR, real-time PCR, and loop-mediated isothermal amplification, which are highly sensitive and specific.
Typical imaging features center around imaging of the liver with CT, ultrasound, or MRI for detection of primary biliary cirrhosis. Traits that raise suspicion for the infection include intra- and extrahepatic dilatation and structures with intraductal pigmented stones, usually in the absence of gallstones and
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