Open AccessOverview of the Epizootiological Situation on Highly Pathogenic Avian Influenza in Russia in 2020
Author(s) -
V. Yu. Marchenko,
Natalya Goncharova,
Elena V. Gavrilova,
Р. А. Максютов,
Alexander B. Ryzhikov
Publication year - 2021
Publication title -
problemy osobo opasnyh infekcij
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.16
H-Index - 3
eISSN - 2658-719X
pISSN - 0370-1069
DOI - 10.21055/0370-1069-2021-2-33-40
Subject(s) - influenza a virus subtype h5n1 , outbreak , highly pathogenic , epizootic , virology , virus , biology , human mortality from h5n1 , clade , h5n1 genetic structure , avian influenza virus , influenza a virus , pandemic , phylogenetics , medicine , infectious disease (medical specialty) , disease , covid-19 , gene , biochemistry , pathology
This review describes the current situation on highly pathogenic avian influenza virus in 2020 and provides forecast of the possible further spread of avian influenza in Russia. In 2020, the circulation of a wide variety of highly pathogenic avian influenza virus subtypes which have epizootiological and epidemiological significance was recorded in the world. Outbreaks of highly pathogenic avian influenza were reported in over 30 countries. Apart from this, human infections with influenza viruses of the A/H5Nx and A/H9N2 subtypes were reported. There was a large-scale epizootic in Russia in 2020, which affected more than 10 regions. Outbreaks among wild birds and poultry were caused by the highly pathogenic influenza virus A/H5N8 of clade 2.3.4.4b. As a result of those outbreaks, more than 1.5 mil. poultry were killed or perished. It was revealed that strains of the influenza virus isolated in Russia have a high degree of identity with the strains circulating in Europe and Southeast Asia. Thus, it was shown again that the territory of Russia plays an important role in the global spread of avian influenza virus.