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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="review-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Epidemiology and Infectious Diseases</journal-id><journal-title-group><journal-title xml:lang="en">Epidemiology and Infectious Diseases</journal-title><trans-title-group xml:lang="ru"><trans-title>Эпидемиология и инфекционные болезни</trans-title></trans-title-group></journal-title-group><issn publication-format="print">3034-2007</issn><issn publication-format="electronic">3034-2015</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">696070</article-id><article-id pub-id-type="doi">10.17816/EID696070</article-id><article-id pub-id-type="edn">JTAPPH</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Reviews</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Научные обзоры</subject></subj-group><subj-group subj-group-type="article-type"><subject>Review Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Cases of human infection with highly pathogenic strains of the avian influenza A virus: risks and vaccination strategies</article-title><trans-title-group xml:lang="ru"><trans-title>Случаи инфицирования людей высокопатогенными штаммами вируса гриппа птиц типа А: риски и подходы к вакцинопрофилактике</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2518-6801</contrib-id><contrib-id contrib-id-type="spin">2707-1446</contrib-id><name-alternatives><name xml:lang="en"><surname>Burtseva</surname><given-names>Elena I.</given-names></name><name xml:lang="ru"><surname>Бурцева</surname><given-names>Елена Ивановна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>д-р мед. наук</p></bio><email>elena-burtseva@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7272-4011</contrib-id><contrib-id contrib-id-type="spin">7710-8090</contrib-id><name-alternatives><name xml:lang="en"><surname>Krepkaia</surname><given-names>Anastasia S.</given-names></name><name xml:lang="ru"><surname>Крепкая</surname><given-names>Анастасия Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nastya18-96@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6206-2299</contrib-id><contrib-id contrib-id-type="spin">4320-1544</contrib-id><name-alternatives><name xml:lang="en"><surname>Ignatieva</surname><given-names>Anna V.</given-names></name><name xml:lang="ru"><surname>Игнатьева</surname><given-names>Анна Викторовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Biology)</p></bio><bio xml:lang="ru"><p>канд. биол. наук</p></bio><email>valgella@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National Research Centre for Epidemiology and Microbiology named after N.F. Gamaleya</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский центр эпидемиологии и микробиологии им. почетного акад. Н.Ф. Гамалеи</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies</institution></aff><aff><institution xml:lang="ru">Федеральный научно-клинический центр специализированных видов медицинской помощи и медицинских технологий</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-12-31" publication-format="electronic"><day>31</day><month>12</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2026-02-24" publication-format="electronic"><day>24</day><month>02</month><year>2026</year></pub-date><volume>30</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>235</fpage><lpage>246</lpage><history><date date-type="received" iso-8601-date="2025-11-11"><day>11</day><month>11</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-12-31"><day>31</day><month>12</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-вектор</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Eco-vector</copyright-holder><copyright-holder xml:lang="ru">Эко-вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2029-02-24"/></permissions><self-uri xlink:href="https://rjeid.com/1560-9529/article/view/696070">https://rjeid.com/1560-9529/article/view/696070</self-uri><abstract xml:lang="en"><p>For several decades, avian influenza viruses have been considered a source of new variants with pandemic potential based on all known influenza pandemics to date. This review provides examples of human infections with various subtypes of avian influenza A viruses since 1997, when the first cases of human infection with highly pathogenic (H5N1) avian influenza viruses were reported in Hong Kong. In recent years, the World Health Organization has reported the largest number of human avian influenza virus infections in the Pacific region. An unusual outbreak of avian influenza A(H5N1) has been documented among cows and birds in the United States, with some farmers being infected as well. The article presents an analysis of infection risks, the properties and structure of strains, and their susceptibility to direct-acting antivirals. It also discusses vaccine development approaches, the strategy and tactics of vaccination within the WHO Pandemic Influenza Preparedness Framework and the Global Influenza Strategy.</p></abstract><trans-abstract xml:lang="ru"><p>На протяжении нескольких десятилетий вирусы гриппа птиц рассматривают как источник формирования нового варианта с пандемическим потенциалом, примером чему служат все известные на сегодняшний день пандемии гриппа. В настоящем обзоре приведены примеры инфицирования людей различными подтипами вируса гриппа птиц типа А, начиная с 1997 года, когда в Гонконге впервые зарегистрировали случаи инфицирования людей высокопатогенным штаммом вируса гриппа птиц A(H5N1). В последние годы наибольшее число случаев заражения людей вирусами гриппа птиц регистрируют в странах Тихоокеанского региона Всемирной организации здравоохранения. Описана необычная вспышка гриппа A(H5N1) среди коров и птиц в Соединённых Штатах Америки, в период которой зарегистрировали случаи инфицирования фермеров. Представлены анализ рисков инфицирования, свойства и структура штаммов, чувствительность к препаратам прямого противогриппозного действия, подходы к разработке вакцин, а также стратегия и тактика вакцинопрофилактики в рамках реализации Программы по подготовке к новой пандемии гриппа и Глобальной стратегии по гриппу Всемирной организации здравоохранения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>avian influenza virus type A</kwd><kwd>highly pathogenic</kwd><kwd>human infection</kwd><kwd>vaccine development</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>вирус гриппа птиц типа А</kwd><kwd>высокопатогенный</kwd><kwd>инфицирование людей</kwd><kwd>разработка вакцин</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Liang Y. 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