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Parasites in herring

Helminthiasis infection caused by the living body eggs, larvae, and adult of representatives of various parasites. Very often, parasitic worms in fish, since this environment is suitable to their life and reproduction. High humidity in combination with the optimum temperature – factors, it is highly favorable for the development of parasites. Victims of worms becomes sea and river fish.

To protect your body from infection by parasites by using heat treatment of fish. However, not all fish dishes involve cooking long cooking at high temperature. Traditional product almost on each table – salted herring. However, this fish snack often carries the risk of infection by helminth infections.

Pre-sanitary control allows for the presence of parasites in herring, but no more than 5 dead individuals per carcass. Sanitary standards fish, not to be in the process of using heat treatment, must be frozen.

This is interesting: the part of the parasites in herring is not dangerous to humans. These varieties of worms lose their viability once in the gastric juice.

The content of the article:


Some parasites can harm human health?

Some parasites in the herring is able to survive in aggressive environment of the human stomach and intestines. They perfectly adapt to the conditions of the gastrointestinal tract, multiply there and cause irreparable harm to the health of your new "owner".

The most dangerous types of helminthiasis transmitted through the consumption of salted herring:

  • Opisthorchiasis;
  • Difillobotrioz;
  • Antacids.

Opisthorchiasis. This kind of helminthiasis causes cat Fluke. Its carriers become mammals, consuming live fish. If poorly processed fish gets into human food, and he becomes the target of opisthorchiasis. Fish is an intermediate host of the cat Fluke, vectordisease. The consequences of opisthorchiasis – the defeat of digestive organs, liver, gall bladder and bile ducts.

Difillobotrioz. This kind of parasitic infestation causes a tapeworm grows to a length of 25 m Difillobotrioz provoke the following symptoms: anemia, abdominal pain, nausea and weakness, severe weight loss, loss of appetite.

Antacids. The disease is caused by anisakidae – round worms, similar in appearance to ascarids. Parasites actively feed in the stomach and intestines of a person, compromising the integrity of the mucosa. It is accompanied by symptoms similar to the signs of appendicitis: nausea and vomiting, diarrhea, fever. Massive infection with anisakidae can lead to death.


How to find out if the herring parasites?

To not purchase herring from parasites, you should take precautions. Attention when choosing a fresh or salted fish will help prevent infection with worms. But sometimes parasites are detected during the cutting and cooking.

Evidence for the presence of parasites in herring:

  • Dent after pressing with your finger for a long time remaining on the carcass;
  • Bleary eyes with a gray tint;
  • Abnormally swollen abdomen;
  • Odor and dark color of the gills;
  • When cleaning fish it is noticeable that the insides have a repulsive sulfuric, putrid smell;
  • Broth of tainted fish has a distinctive oily film is on the surface appear white flakes of foam from the coagulated protein.

Important! Large retail outlets or specialized stores for the sale of fish all products are subject to sanitary control. These precautions are a reliable insurance against the purchase of fish infected with parasites.


What are the parasites in herring?

To see the parasites in herring naked eye. The main place of their habitat – close to Molokai or caviar.

The appearance of anisakid one of the parasites in herring – like the Ascaris. This roundworms fusiform length of 5-6 cm On one of the rounded ends of anisakid is 3 lips. For a person extremely dangerous the larvae of this parasite.

Cat Fluke that encourage the developmentopisthorchiasis, the size of the flattened torso does not exceed 3 cm, and its thickness is 1.5 cm In the human body, they come as larvae, indistinguishable to ordinary eyes.

Heat treatment of fish surely would have destroyed these parasites in herring, as cooking at high temperature (100°C) deprives helminth viability. However, salted or smoked herring is not exposed to high temperatures, keeping the risk of infection.

Saline solution is not always destroys larvae and Mature individuals. In some cases this measure even makes parasites more viable. Smoke point is so low that it can not serve as a guarantee of safety. On the contrary, increased temperature when Smoking is an additional factor for the favourable development of the parasites in herring.

How to protect yourself from infection?

To not get parasites in herring, at the time of purchase should observe some simple rules:

  • Avoid buying a gutted herring, so as to detect parasites is much easier when butchering fish than in the preserves and semi-finished products;
  • Buy fish should only in specialized retail outlets, departments of large supermarkets;
  • Fresh fish stored in a freezer at temperatures above -20°C;
  • 10 minute exposure of the fish at a temperature of -30°C fully protect it from parasites;
  • Fry the fish should be at least 20 minutes, cutting the carcass along the spine;
  • Cooking fish is held not less than 20 minutes from the moment of boiling water;
  • Cooking fish cakes in the oven can take less than half an hour.

Is it possible to have infested herring?

Of the 300 species of parasites occurring in fish, for humans only a few species. This danger is only when improper storage and cooking of fish dishes. Freezing freshly caught herring at a very low temperature will destroy the parasites in the intestines of the fish, not giving them the opportunity to get to muscular tissues. Removingthe eggs, milk and intestines of herring, it can be easily eaten.

Important! Finding parasites in the intestines of herrings, it is necessary to ensure their viability. Dead individuals are not dangerous, they only harm the aesthetic senses of consumers.


What to do in case of infection?

Of treating patients infected by the parasites, is the doctor-parasitologist, infectious disease. The incubation period for anisakidae equal 10-14 days. To confirm the diagnosis, conduct a differential diagnosis of diseases with similar symptoms. In a laboratory study in fecal and vomit find larvae of the parasite.

The patient undergoes EGD – study of the digestive system with the help of a gastroscope. The result of this study in the stomach and 12-duodenal ulcer can be detected erosion of the mucosa, the larvae of the helminth. When collecting history doctor said, not used whether the patient is a fish, not heat-treated.

Treatment of parasites can be both surgical and medical. Antihelminthic drugs, Mebendazole, Albendazole. In complex forms of helminthiasis sick during the year, is at the dispensary, takes place regularly fibrogastroduodenoscopy (EGD).