Spread of seafish invasions in the northen sea of okhotsk as a factor of human infection.
The results of the analysis are presented in the comparative aspect of the long-term - 1989-2021. - dynamics of infection of commercial fish with parasites common to humans and animals, and determination of their role in the spread of invasions among the population of the region. During this period, in marine fish-herring Clupea pallasii Valenciennes, 1847 (Clupeiformes: Clupeidae), saffron cod Eleginus gracilis, flounder Acanthopsetta nadeshnyi and smelt Osmerus mordax dentex Steindachner, 1870 - 5 types of helminthes potentially dangerous for humans have been identified, which can cause such dangerous diseases like anisacidosis, diphyllobothriasis and corynosomiasis. All fish species show high rates of invasion. Herring is infested by 97.4%, saffron cod - 55.2%, flounder - 67.5%, smelt - 58.4%. Ichthyopathological examinations isolated Anisakis simplex, Pseudoterranova decipiens, Pyramicocephalus phocarum, Diphyllobothrium sobolevi, Corynosoma strumosum. Individuals with combined invasion were registered: saffron cod Anisakis simplex, Pyramicocephalus phocarum, Corynosoma strumosum; smelt Anisakis simplex (Pseudoterranova decipiens), Diphyllobothrium sobolevi, Corynosoma strumosum. The most dangerous for humans are flounder and smelt due to the localization of helminths in the muscles.