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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">epidemiology</journal-id><journal-title-group><journal-title xml:lang="ru">Эпидемиология и Вакцинопрофилактика</journal-title><trans-title-group xml:lang="en"><trans-title>Epidemiology and Vaccinal Prevention</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-3046</issn><issn pub-type="epub">2619-0494</issn><publisher><publisher-name>«Numicom» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31631/2073-3046-2019-18-1-4-17</article-id><article-id custom-type="elpub" pub-id-type="custom">epidemiology-656</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</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Оптимизация прогнозирования вакцинных штаммов гриппа</article-title><trans-title-group xml:lang="en"><trans-title>Optimization of the Predicting of the Influenza Vaccine Strains</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Харченко</surname><given-names>Е. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kharchenko</surname><given-names>E. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Харченко Евгений Петрович - к. б. н., ведущий научный сотрудник </p><p>194223, Санкт-Петербург, пр. ТорезаТел./факс: 8 (812) 552-70-31 (служебн.); 8 904 338-22-80 (моб.)</p></bio><bio xml:lang="en"><p>Eugene P. Kharchenko — Dr. Sci. (Biol.), leader researcher </p><p>194223, St. Petersburg, Toreza pr., 44. +7 (904) 338-22-80,</p></bio><email xlink:type="simple">neuro.children@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУН «Институт эволюционной физиологии и биохимии им. И. М. Сеченова» РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>10</day><month>03</month><year>2019</year></pub-date><volume>18</volume><issue>1</issue><fpage>4</fpage><lpage>17</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Харченко Е.П., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Харченко Е.П.</copyright-holder><copyright-holder xml:lang="en">Kharchenko E.P.</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://www.epidemvac.ru/jour/article/view/656">https://www.epidemvac.ru/jour/article/view/656</self-uri><abstract><sec><title>Актуальность</title><p>Актуальность. Вакцинация по-прежнему является наиболее эффективным способом снижения заболеваемости и смертности от гриппа и вызываемых им осложнений. ВОЗ рекомендует штаммовый состав вакцин к каждому эпидсезону гриппа. К сожалению, соответствие вакцинных и циркулирующих в эпидсезоне штаммов вируса гриппа в силу их изменчивости не всегда является оптимальным.</p></sec><sec><title>Цель</title><p>Цель. Разработать новый метод прогнозирования оптимальной структуры гемагглютинина (HA) для вакцинных штаммов H1N1 и H3N2 для предстоящих эпидсезонов гриппа, сравнить их с рекомендованными ВОЗ и с циркулирующими</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Для анализа были использованы доступные в Интернете базы данных первичных структур гемагглютинина НА штаммов H1N1 и H3N2, выделенных в эпидсезон гриппа 2012/2013–2017/2018 гг. Для построения прогнозируемой аминокислотной последовательности НА использована адаптированная скрытая марковская модель.</p></sec><sec><title>Результаты</title><p>Результаты. Использованный биоинформативный подход показал возможность построения оптимальной первичной структуры НА вакцинных штаммов. Она максимально близка к НА циркулирующих в эпидсезоне штаммов вирусов, распространена среди них и превосходит по критерию структурной близости НА штаммов, реко менд ванных ВОЗ.</p></sec><sec><title>Заключение</title><p>Заключение. Данные по первичной структуре НА вируса гриппа можно рассматривать как надежную основу для прогнозирования вакцинных штаммов, снижающую риски для неоптимального или даже ошибочного выбора. Биоинформационный подход позволяет проводить непрерывный мониторинг изменения НА по прошествии эпидсезона и прогностически оценивать соответствие производимых к будущему эпидсезону вакцин.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title> Relevance</title><p> Relevance. Vaccination is still the most effective way to reduce the incidence and mortality from influenza and the complications it causes. WHO recommends the composition of the vaccine strain for each influenza season. Unfortunately, the relevance of vaccines and strains of influenza virus circulating during the epidemic season cannot always coincide. The cause is flu variability.Aim is to develop a new computational method for predicting an optimal hemagglutinin (HA) structure in H1N1 and H3N2 human influenza vaccine strains for coming epidemic seasons and to compare its results with WHO recommendations.</p></sec><sec><title>Materials and method</title><p>Materials and method. For this study HA sequences were used from data bases available in INTERNET and the modified hidden Markov model was used to construct the HA primary structures.</p></sec><sec><title>Results</title><p>Results. It was indicated that the new bioinformatics approach allowed to construct an optimal structure of HA for vaccine strains. It was at most close to HA of circulating virus strains in coming epidemic seasons, spreaded over them and was superior to WHO recommendations. </p></sec><sec><title>Conclusion</title><p>Conclusion: HA sequences should be considered as reliable background for predicting vaccine strains to decrease risks of not optimal and even mistakable choices. Bioinformatics approach allows to continually monitor HA changes after epidemics and to estimate adequacy of manufacturing vaccines to the future epidemic season.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>прогнозирование</kwd><kwd>скрытая марковская модель</kwd><kwd>компьютерный анализ</kwd><kwd>вирусы гриппа</kwd><kwd>вакцинные штаммы</kwd><kwd>гемагглютинин</kwd><kwd>антигенные сайты</kwd></kwd-group><kwd-group xml:lang="en"><kwd>influenza virus</kwd><kwd>hemagglutinin</kwd><kwd>vaccine</kwd><kwd>predicting</kwd><kwd>Markov chain</kwd><kwd>computer analysis</kwd><kwd>antigen sites</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Klingen T.R. Reimering S., Guzman C.A., et al. In silico vaccine strain prediction for human influenza viruses // Trends in Microbiology. 2018. Vol. 26, N 2. 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