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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">veterinary</journal-id><journal-title-group><journal-title xml:lang="ru">Ветеринария сегодня</journal-title><trans-title-group xml:lang="en"><trans-title>Veterinary Science Today</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2304-196X</issn><issn pub-type="epub">2658-6959</issn><publisher><publisher-name>"Veinard"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29326/2304-196X-2022-11-4-367-374</article-id><article-id custom-type="elpub" pub-id-type="custom">veterinary-682</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ | БИОТЕХНОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES | BIOTECHNOLOGY</subject></subj-group></article-categories><title-group><article-title>Иммунобиологические свойства инактивированных вакцин против высокопатогенного гриппа птиц, изготовленных на основе антигенов штаммов вируса гриппа подтипа А/Н5N1 различной вирулентности</article-title><trans-title-group xml:lang="en"><trans-title>Immunobiological properties of inactivated anti-highly pathogenic avian influenza vaccines based on antigens of А/Н5N1 avian influenza virus strains of different virulence</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6802-9940</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фролов</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Frolov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="en"><p>Sergey V. Frolov, Candidate of Science (Veterinary Medicine), Head of Department for Avian Disease Prevention</p><p>Vladimir</p></bio><email xlink:type="simple">frolov@arriah.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1659-3256</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чвала</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Chvala</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Ilya A. Chvala, Candidate of Science (Veterinary Medicine), Deputy Director for Research</p><p>Vladimir</p></bio><email xlink:type="simple">chvala@arriah.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9672-8594</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мороз</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Moroz</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="en"><p>Natalya V. Moroz, Candidate of Science (Veterinary Medicine), Deputy Director for Production</p><p>Vladimir</p></bio><email xlink:type="simple">moroz@arriah.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1898-4576</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кулаков</surname><given-names>В. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulakov</surname><given-names>V. Yu.</given-names></name></name-alternatives><bio xml:lang="en"><p>Vladimir Yu. Kulakov, Candidate of Science (VeterinaryMedicine), Leading Researcher, Laboratory for Avian Diseases Prevention</p><p>Vladimir</p></bio><email xlink:type="simple">kulakov@arriah.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9376-4728</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сосипаторова</surname><given-names>В. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Sosipatorova</surname><given-names>V. Yu.</given-names></name></name-alternatives><bio xml:lang="en"><p>Viktoriya Yu. Sosipatorova, Candidate of Science (Biology), Junior Researcher, Reference Laboratory for Avian Viral Diseases</p><p>Vladimir</p></bio><email xlink:type="simple">sosipatorova@arriah.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1681-5795</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Андрейчук</surname><given-names>Д. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Andreychuk</surname><given-names>D. B.</given-names></name></name-alternatives><bio xml:lang="en"><p>Dmitry B. Andreychuk, Candidate of Science (Biology), Head of Reference Laboratory for Avian Viral Diseases</p><p>Vladimir</p></bio><email xlink:type="simple">andreychuk@arriah.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>FGBI «Federal Centre for Animal Health» (FGBI «ARRIAH»)</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>15</day><month>12</month><year>2022</year></pub-date><volume>11</volume><issue>4</issue><fpage>367</fpage><lpage>374</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Фролов С.В., Чвала И.А., Мороз Н.В., Кулаков В.Ю., Сосипаторова В.Ю., Андрейчук Д.Б., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Фролов С.В., Чвала И.А., Мороз Н.В., Кулаков В.Ю., Сосипаторова В.Ю., Андрейчук Д.Б.</copyright-holder><copyright-holder xml:lang="en">Frolov S.V., Chvala I.A., Moroz N.V., Kulakov V.Y., Sosipatorova V.Y., Andreychuk D.B.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://veterinary.arriah.ru/jour/article/view/682">https://veterinary.arriah.ru/jour/article/view/682</self-uri><abstract><p>Антиген вируса низкопатогенного гриппа птиц подтипа H5N1 штамма «Ямал» в составе инактивированной эмульгированной вакцины способен индуциро­вать выработку напряженного иммунитета у кур против высокопатогенного гриппа птиц. Инактивированные эмульсионные вакцины на основе антигена вируса низкопатогенного гриппа птиц подтипа Н5N1 штамма «Ямал» и антигена вируса высокопатогенного гриппа птиц подтипа Н5N1 штамма А/chicken/Primorsky/85/08 способны вызывать дозозависимый перекрестный иммунитет в отношении актуальных вирусов высокопатогенного гриппа птиц под­типов Н5N1 и H5N8. Так, для защиты 95% вакцинированной птицы прививная доза антигена вируса низкопатогенного гриппа птиц подтипа Н5N1 штамма «Ямал» против вируса высокопатогенного гриппа птиц подтипа Н5N1 штамма А/chicken/Primorsky/85/08 в прививном объеме вакцины должна составлять не менее 609 ГАЕ и против вируса высокопатогенного гриппа птиц подтипа Н5N8 штамма A/duck/KChR/1590-20/20 – 255 ГАЕ. Аналогичный показатель, установленный для антигена вируса высокопатогенного гриппа птиц подтипа Н5N1 штамма А/chicken/Primorsky/85/08 против вируса высокопатогенного гриппа птиц подтипа Н5N8 штамма A/duck/KChR/1590-20/20, должен составлять не менее 294 ГАЕ. Протективный эффект испытанных инактивированных вакцин связан с напряженностью гуморального иммунитета птицы. Прогнозируемый титр антител к гомологичным антигенам, при котором ожидаемая защита вакцинированной птицы достигнет 95%, составил величину 1:538, или 9,1 log2. Инактивированная вакцина против гриппа птиц Н5 на основе антигена вируса низкопатогенного гриппа птиц подтипа H5N1 штамма «Ямал» обладает высокой иммуногенной активностью и защищает птиц при заражении вирусом высокопатогенного гриппа птиц подтипов Н5N1 и Н5N8.</p></abstract><trans-abstract xml:lang="en"><p>Antigen of H5N1 low pathogenic avian influenza virus Yamal strain included in the inactivated emulsion vaccine is able to induce strong immunity against highly pathogenic avian influenza in chickens. Inactivated emulsion vaccines based on antigen of H5N1 low pathogenic avian influenza virus Yamal strain and antigen of H5N1 highly pathogenic avian influenza virus А/chicken/Primorsky/85/08 strain are capable of inducing dose-dependent cross immunity against current Н5N1 and H5N8 highly pathogenic avian influenza viruses. Thus, inoculation dose of H5N1 low pathogenic avian influenza virus Yamal strain antigen required for pro­tection of 95% of chickens against H5N1 highly pathogenic avian influenza virus А/chicken/Primorsky/85/08 strain and against H5N8 highly pathogenic avian influenza virus A/duck/KChR/1590-20/20 in the vaccine inoculation volume shall be at least 609 HAU and 255 HAU, respectively. The inoculation dose of H5N1 highly pathogenic avian influenza virus А/chicken/Primorsky/85/08 strain antigen for protection from H5N8 highly pathogenic avian influenza virus A/duck/KChR/1590-20/20 strain shall be at least 294 HAU. Protective effect of the tested inactivated vaccines was associated with humoral immunity level in poultry. Predicted titre of antibodies to homologous virus antigens conferring expected 95% protection of vaccinated poultry was 1:538 or 9.1 log2. Inactivated vaccine based on H5N1 low pathogenic avian influenza virus Yamal strain antigen demonstrates its high immunogenicity in chickens infected with Н5N1 and Н5N8 highly pathogenic avian influenza influenza virus.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>инактивированная вакцина</kwd><kwd>антиген вируса низкопатогенного гриппа птиц</kwd><kwd>иммунитет</kwd><kwd>протективный титр антител</kwd><kwd>высокопато¬генный грипп птиц подтипа Н5</kwd></kwd-group><kwd-group xml:lang="en"><kwd>inactivated vaccine</kwd><kwd>low pathogenic avian influenza (LPAI) virus antigen</kwd><kwd>immunity</kwd><kwd>protective antibody titre</kwd><kwd>H5 highly pathogenic avian influenza (HPAI)</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена за счет средств ФГБУ «ВНИИЗЖ» в рамках тематики научно-исследовательских работ «Ветеринарное благополучие».</funding-statement><funding-statement xml:lang="en">The study was funded by the FGBI «ARRIAH» within the framework of «Veterinary Welfare» research work.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Avian influenza (including infection with pathogenicity avian influenza viruses). 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