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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" article-type="research-article" dtd-version="1.1d1" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher">Bulletin of Semashko National Research Institute of Public Health</journal-id><journal-title-group><journal-title>Bulletin of Semashko National Research Institute of Public Health</journal-title></journal-title-group><issn publication-format="print">2415-8410</issn><issn publication-format="electronic">2415-8429</issn><publisher><publisher-name>FSSBI «N.A. Semashko National Research Institute of Public Health»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">2828</article-id><article-id pub-id-type="doi">10.69541/NRIPH.2024.03.001</article-id><article-categories><subj-group subj-group-type="heading"><subject>Научная статья</subject></subj-group></article-categories><title-group><article-title>Primary morbidity in the child population of the Vilyui group of districts for 1995—2021</article-title></title-group><contrib-group><contrib contrib-type="author"><name name-style="western"><surname>Timofeev</surname><given-names>Leonid F.</given-names></name><email>tlfnauka@mail.ru</email><uri content-type="orcid">https://orcid.org/0000-0003-1849-3504</uri><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Savvina</surname><given-names>Nadezhda V.</given-names></name><email>nadvsavvina@mail.ru</email><uri content-type="orcid">https://orcid.org/0000-0003-2441-6193</uri><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Krivoshapkin</surname><given-names>Vadim G.</given-names></name><email>kukaj1937@gmail.com</email><uri content-type="orcid">https://orcid.org/0000-0002-8960-3283</uri><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Timofeev</surname><given-names>Artem L.</given-names></name><email>su-yuol@mail.ru</email><uri content-type="orcid">https://orcid.org/0000-0003-1046-8064</uri><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff id="aff-1">Medical Institute of the North-Eastern Federal University named after M.K.Ammosov</aff><aff id="aff-2">3Medical Institute of the North-Eastern Federal University named after M.K.Ammosov</aff><aff id="aff-3">GAU RS (Ya) «Medical Center of Yakutsk»</aff><pub-date date-type="epub" iso-8601-date="2024-10-01" publication-format="electronic"><day>01</day><month>10</month><year>2024</year></pub-date><issue>3</issue><fpage>5</fpage><lpage>11</lpage><history><pub-date date-type="received" iso-8601-date="2025-05-27"><day>27</day><month>05</month><year>2025</year></pub-date></history><permissions><copyright-statement>Copyright © 2025,</copyright-statement><copyright-year>2025</copyright-year></permissions><abstract>&lt;p&gt;The analysis of the primary morbidity of the child population of the districts (uluses) included in the Vilyui group (Verkhnevilyuisky, Vilyuisky, Mirninsky, Nyurbinsky and Suntar) was carried out. First, we analyzed the morbidity data in general and by disease classes in the indicated districts (uluses) in a comparative aspect with all administrative-territorial entities of the republic. At the same time, the levels of morbidity for certain classes of diseases were revealed in dynamics for the periods under consideration. It was found that in terms of the incidence of the child population as a whole, the Nyurbinsky and Verkhnevilyuisky uluses had a relatively better position. In Mirny district has relatively high levels of primary morbidity are noted in 11 classes of diseases out of 17, while in Verkhnevilyuysky  none.&lt;/p&gt;</abstract><kwd-group xml:lang="en"><kwd>public health</kwd><kwd>primary morbidity</kwd><kwd>primary morbidity of the child population</kwd><kwd>Vilyui group of uluses / districts</kwd><kwd>morbidity by disease class</kwd><kwd>Republic of Sakha (Yakutia)</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>здоровье населения</kwd><kwd>первичная заболеваемость</kwd><kwd>первичная заболеваемость детского населения</kwd><kwd>Вилюйская группа улусов/районов</kwd><kwd>заболеваемость по классам болезней</kwd><kwd>Республика Саха (Якутия)</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Medik V.A. Public health and healthcare: textbook. V.A.Medik. 4th ed., reprint. Moscow: GEOTAR-Media; 2020. 672 p. 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