{"id":16820,"date":"2026-03-26T16:04:39","date_gmt":"2026-03-26T15:04:39","guid":{"rendered":"https:\/\/www.bluesquarehub.com\/reaching-the-missed-how-the-immureach-project-is-transforming-immunization-in-the-democratic-republic-of-the-congo\/"},"modified":"2026-04-09T09:42:33","modified_gmt":"2026-04-09T08:42:33","slug":"atteindre-les-oublies-comment-projet-immureach-transforme-vaccination-republique-democratique-du-congo","status":"publish","type":"post","link":"https:\/\/www.bluesquarehub.com\/fr\/atteindre-les-oublies-comment-projet-immureach-transforme-vaccination-republique-democratique-du-congo\/","title":{"rendered":"Atteindre les oubli\u00e9s : comment le projet ImmuReach transforme la vaccination en R\u00e9publique d\u00e9mocratique du Congo"},"content":{"rendered":"\n<h2 class=\" wp-block-heading eplus-wrapper\">Le contexte : combler les lacunes syst\u00e9miques de la vaccination<\/h2>\n\n\n\n<p class=\" eplus-wrapper\">Avec un taux de mortalit\u00e9 des moins de 5 ans proche de 8 %, la R\u00e9publique d\u00e9mocratique du Congo (RDC) fait face \u00e0 un d\u00e9fi majeur de sant\u00e9 publique, o\u00f9 les maladies \u00e9vitables par la vaccination restent une cause principale de d\u00e9c\u00e8s infantiles. Pour r\u00e9pondre \u00e0 cette crise, le projet <strong>ImmuReach<\/strong> (<strong>Immunisation en RDC : atteindre les communaut\u00e9s oubli\u00e9es<\/strong>) a \u00e9t\u00e9 lanc\u00e9. Dirig\u00e9 par Bluesquare, en collaboration avec l\u2019<strong>Universit\u00e9 Libre de Bruxelles<\/strong> (ULB) et l\u2019<strong>Universit\u00e9 de Kinshasa<\/strong> (Unikin), le projet vise \u00e0 d\u00e9velopper des mod\u00e8les op\u00e9rationnels fond\u00e9s sur les donn\u00e9es afin d\u2019identifier les populations insuffisamment vaccin\u00e9es et d\u2019<strong>optimiser l\u2019allocation des ressources de sant\u00e9<\/strong>.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">ImmuReach accorde une attention particuli\u00e8re aux enfants dits \u00ab <strong>z\u00e9ro dose<\/strong> \u00bb (ceux qui n\u2019ont re\u00e7u aucune premi\u00e8re dose du vaccin pentavalent de base). Alors que les mod\u00e8les de vaccination traditionnels s\u2019appuient souvent sur des <strong>indicateurs g\u00e9ographiques<\/strong> simples, ImmuReach innove avec une approche globale permettant de <strong>cartographier la distribution spatiale des enfants non vaccin\u00e9s<\/strong> tout en analysant les facteurs comportementaux complexes li\u00e9s \u00e0 l\u2019h\u00e9sitation vaccinale.<\/p>\n\n\n<div class=\"wp-block-image \">\n<figure class=\"aligncenter size-large eplus-wrapper\"><img decoding=\"async\" width=\"1024\" height=\"565\" data-src=\"https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-9-1024x565.png\" alt=\"\" class=\"wp-image-16813 lazyload\" data-srcset=\"https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-9-1024x565.png 1024w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-9-300x166.png 300w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-9-768x424.png 768w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-9-1536x848.png 1536w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-9.png 1600w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/565;\" \/><figcaption class=\"wp-element-caption\"><em>Distribution des enfants z\u00e9ro dose (zone de sant\u00e9)<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n<h2 class=\" wp-block-heading eplus-wrapper\">Les m\u00e9thodes : int\u00e9gration de multiples jeux de donn\u00e9es et apprentissage automatique<\/h2>\n\n\n\n<p class=\" eplus-wrapper\">Pour dresser un tableau r\u00e9aliste du paysage vaccinal en RDC, le projet int\u00e8gre des ensembles de donn\u00e9es vastes et vari\u00e9s. Cela inclut des enqu\u00eates massives sur la couverture vaccinale portant sur environ 80 000 m\u00e9nages chaque ann\u00e9e, des distributions de population \u00e0 haute r\u00e9solution utilisant des outils comme GRID3 et WorldPop, ainsi que des donn\u00e9es officielles sur les structures de sant\u00e9 d\u00e9taillant les capacit\u00e9s du personnel et les stocks de vaccins.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Au c\u0153ur de la m\u00e9thodologie du projet se trouve l\u2019utilisation des <strong>arbres de r\u00e9gression boost\u00e9s<\/strong> (Boosted Regression Trees, BRT), un algorithme puissant d\u2019apprentissage automatique capable de capturer des relations complexes et non lin\u00e9aires entre les r\u00e9sultats de sant\u00e9 et leurs d\u00e9terminants. L\u2019\u00e9quipe de recherche applique ces mod\u00e8les \u00e0 deux \u00e9chelles distinctes :<\/p>\n\n\n<ul class=\" wp-block-list eplus-wrapper eplus-styles-uid-f66eca\">\n<li class=\" eplus-wrapper\"><strong>Mod\u00e8les au niveau des zones de sant\u00e9<\/strong> : ils pr\u00e9disent la proportion d\u2019enfants z\u00e9ro dose dans les zones administratives afin de soutenir directement la micro-planification des campagnes r\u00e9gionales. <\/li>\n\n\n\n<li class=\" eplus-wrapper\"><strong>Mod\u00e8les au niveau des m\u00e9nages<\/strong> : ils analysent les d\u00e9terminants socioculturels de l\u2019h\u00e9sitation vaccinale \u00e0 l\u2019aide du cadre COM-B (Capacit\u00e9, Opportunit\u00e9, Motivation, Comportement), qui regroupe les donn\u00e9es d\u2019enqu\u00eate complexes en indicateurs comportementaux exploitables.<\/li>\n<\/ul>\n\n\n<figure class=\" wp-block-image size-large eplus-wrapper\"><img decoding=\"async\" width=\"1024\" height=\"426\" data-src=\"https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-4-1024x426.png\" alt=\"\" class=\"wp-image-16795 lazyload\" data-srcset=\"https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-4-1024x426.png 1024w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-4-300x125.png 300w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-4-768x320.png 768w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-4-1536x639.png 1536w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-4.png 1600w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/426;\" \/><\/figure>\n\n\n\n<p class=\" eplus-wrapper\">Par ailleurs, le projet \u00e9value l\u2019acc\u00e8s physique aux centres de sant\u00e9 \u00e0 l\u2019aide d\u2019un indicateur avanc\u00e9 de type \u00ab <strong>zone de desserte flottante en trois \u00e9tapes<\/strong> \u00bb. Cette m\u00e9thode calcule de mani\u00e8re r\u00e9aliste la disponibilit\u00e9 des soins en tenant compte des temps de marche estim\u00e9s, de la concurrence locale et de la capacit\u00e9 de service des centres de sant\u00e9.<\/p>\n\n\n\n<h2 class=\" wp-block-heading eplus-wrapper\">Premiers r\u00e9sultats : cartographier la vuln\u00e9rabilit\u00e9 et les comportements<\/h2>\n\n\n\n<p class=\" eplus-wrapper\">Les analyses spatiales r\u00e9v\u00e8lent que les enfants z\u00e9ro dose sont fortement concentr\u00e9s dans les r\u00e9gions foresti\u00e8res \u00e9quatoriales centrales de la RDC. Les mod\u00e8les montrent que le statut z\u00e9ro dose est fortement corr\u00e9l\u00e9 \u00e0 une <strong>faible couverture pour d\u2019autres vaccins essentiels de l\u2019enfance<\/strong>, notamment contre la poliomy\u00e9lite, le rotavirus et les infections pneumococciques. Cette corr\u00e9lation indique que la sous-vaccination refl\u00e8te souvent des lacunes syst\u00e9miques plus larges dans l\u2019acc\u00e8s aux services de sant\u00e9 de routine, plut\u00f4t que des refus isol\u00e9s de vaccination.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">De plus, la mod\u00e9lisation comportementale confirme que les indicateurs composites d\u2019acceptation vaccinale sont nettement plus \u00e9lev\u00e9s chez les personnes s\u2019occupant d\u2019enfants non z\u00e9ro dose que chez celles dont les enfants restent totalement non vaccin\u00e9s.<\/p>\n\n\n\n<p class=\" eplus-wrapper\"><\/p>\n\n\n\n<figure class=\" wp-block-image size-large eplus-wrapper\"><img decoding=\"async\" width=\"1024\" height=\"547\" data-src=\"https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-10-1024x547.png\" alt=\"\" class=\"wp-image-16816 lazyload\" data-srcset=\"https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-10-1024x547.png 1024w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-10-300x160.png 300w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-10-768x410.png 768w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-10.png 1430w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/547;\" \/><\/figure>\n\n\n\n<h2 class=\" wp-block-heading eplus-wrapper\">Perspectives : des mod\u00e8les pr\u00e9dictifs aux outils op\u00e9rationnels<\/h2>\n\n\n\n<p class=\" eplus-wrapper\">\u00c0 l\u2019avenir, ImmuReach vise \u00e0 transformer ses <strong>mod\u00e8les pr\u00e9dictifs en produits de donn\u00e9es exploitables bas\u00e9s sur le cloud<\/strong>, gr\u00e2ce \u00e0 la plateforme <a href=\"https:\/\/www.bluesquarehub.com\/fr\/produits\/softwares\/openhexa\/\" type=\"page\" id=\"14205\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-blue-link-color\">OpenHEXA<\/mark><\/a>. Le projet d\u00e9veloppe actuellement deux principaux outils d\u2019aide \u00e0 la d\u00e9cision :<\/p>\n\n\n<ol class=\" wp-block-list eplus-wrapper eplus-styles-uid-d6902f\">\n<li class=\" eplus-wrapper\"><strong>Outil de ciblage des enfants z\u00e9ro dose et d\u2019appui \u00e0 la micro-planification<\/strong> : il combinera la mod\u00e9lisation des temps de trajet et les pr\u00e9dictions de risque afin d\u2019aider les agents de sant\u00e9 \u00e0 identifier plus pr\u00e9cis\u00e9ment les zones mal desservies lors des campagnes de vaccination. <\/li>\n\n\n\n<li class=\" eplus-wrapper\"><strong>Optimiseur d\u2019allocation des ressources pour la vaccination de routine<\/strong> : cet outil fournira des recommandations au niveau des zones de sant\u00e9 sur la meilleure r\u00e9partition du temps du personnel et des doses de vaccins afin de r\u00e9duire la pr\u00e9valence des enfants z\u00e9ro dose dans des conditions op\u00e9rationnelles r\u00e9elles.<\/li>\n<\/ol>\n\n<div class=\"wp-block-image \">\n<figure class=\"aligncenter size-large eplus-wrapper\"><img decoding=\"async\" width=\"1024\" height=\"564\" data-src=\"https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-6-1024x564.png\" alt=\"\" class=\"wp-image-16797 lazyload\" data-srcset=\"https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-6-1024x564.png 1024w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-6-300x165.png 300w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-6-768x423.png 768w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-6-1536x846.png 1536w, https:\/\/www.bluesquarehub.com\/wp-content\/uploads\/2026\/03\/image-6.png 1600w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/564;\" \/><figcaption class=\"wp-element-caption\"><em>Sch\u00e9ma d\u2019\u00e9chantillonnage<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\" eplus-wrapper\">En d\u00e9finitive, ImmuReach pr\u00e9voit d\u2019int\u00e9grer ces visualisations avanc\u00e9es et ces outils d\u2019optimisation directement dans les flux de travail existants du Programme \u00c9largi de Vaccination (PEV) de la RDC et dans les syst\u00e8mes nationaux de suivi des performances. En combinant une mod\u00e9lisation spatiale de pointe avec les infrastructures sanitaires locales, ImmuReach garantit que ses analyses se traduiront par un impact concret et durable pour les enfants qui en ont le plus besoin.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le contexte : combler les lacunes syst\u00e9miques de la vaccination Avec un taux de mortalit\u00e9 des moins de 5 ans proche de 8 %, la R\u00e9publique d\u00e9mocratique du Congo (RDC) fait face \u00e0 un d\u00e9fi majeur de sant\u00e9 publique, o\u00f9 les maladies \u00e9vitables par la vaccination restent une cause principale de d\u00e9c\u00e8s infantiles. Pour r\u00e9pondre [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":16822,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","editor_plus_copied_stylings":"{}","footnotes":""},"categories":[211],"tags":[195],"class_list":["post-16820","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vaccination","tag-vaccination"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Atteindre les oubli\u00e9s : comment le projet ImmuReach transforme la vaccination en R\u00e9publique d\u00e9mocratique du Congo - Bluesquare<\/title>\n<meta name=\"description\" content=\"Ce projet d\u00e9veloppe des mod\u00e8les bas\u00e9s sur les donn\u00e9es pour identifier les populations insuffisamment vaccin\u00e9es et optimiser l\u2019allocation des ressources.\" 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