Parasitic diseases, Opisthorchiasis and Diphyllobothriasis, reported in Bashkiria


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Cases of parasitic diseases have been recorded in Bashkiria, according to reports from Rospotrebnadzor in the Republic of Belarus.


Opisthorchiasis and diphyllobothriasis have been recorded in the area. The first of these diseases is caused by opisthorchis – small parasites 6-13 mm long. The disease affects the liver, bile ducts, and pancreas. Infection in humans occurs when eating undisinfected fish of the carp family (ide, daci, roach, bream, and others).

From 12 to 35 cases of opisthorchiosis are registered annually in the republic. So, in 2021, 12 people fell ill, and the incidence rate was 0.3 per 100,000 population. For 9 months of 2022, 21 people were infected (0.52 cases per 100,000 people), which exceeded the long-term average by 1.2 times.

In the Russian Federation, the main foci of helminthiasis are the Ob-Irtysh basin (infection of up to 90% of the population), the Volga and Kama basins (up to 60%). However, infection through fish caught in other regions is not excluded.

Trichinosis is a helminthiasis that occurs with signs of a dominant lesion of the gastrointestinal tract and is often accompanied by the development of anemia. The main sources of infection are fish living in freshwater reservoirs (pike, perch, etc.), as well as marine fish found in freshwater rivers (pink salmon, chum salmon, Pacific salmon, and others).

In Bashkiria, isolated cases of filariasis have been recorded. For 9 months of this year, 3 patients were registered, and the incidence rate was 0.07 per 100,000 residents, which is at the level of the same period last year, and exceeds the long-term average by 16%.

The department indicated that “infection with these parasites occurs when eating fish without sufficient heat treatment, which is purchased from markets from individuals, when leaving to endemic areas in the north, which are brought from endemic areas.”

Diseases like Telangiectasia And the anisakiasis It is not registered.

Experts note that opisthorchiasis, diphyllobothriosis and other helminths significantly harm the health of the population, and the course of the disease is often accompanied by a chronic process and irreversible complications leading to disability. In some cases, the disease ends in death.

The agency urges not eating raw and unsanitized fish, using separate cutting boards and knives, handling them well after cutting fish, and following rules for heat treatment, freezing and salting fish. When the first signs of the disease appear, you should consult a doctor.

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