{"id":275570,"date":"2022-07-20T11:10:00","date_gmt":"2022-07-20T11:10:00","guid":{"rendered":"https:\/\/mahfoudhi.xyz\/ar\/?p=275569"},"modified":"2022-07-20T11:10:00","modified_gmt":"2022-07-20T11:10:00","slug":"etude-omicron-une-4e-dose-du-vaccin-d-astrazeneca-est-efficace-a-73-pour-prevenir-des-infections","status":"publish","type":"post","link":"https:\/\/realites.com.tn\/fr\/etude-omicron-une-4e-dose-du-vaccin-d-astrazeneca-est-efficace-a-73-pour-prevenir-des-infections\/","title":{"rendered":"Etude\/ Omicron: Une 4e dose du Vaccin d\u2019AstraZeneca\u00a0est efficace \u00e0 73% pour pr\u00e9venir des infections"},"content":{"rendered":"<div style=\"text-align:start\">\n<p><span style=\"font-size:small\"><span style=\"color:#222222\"><span style=\"font-family:Arial, Helvetica, sans-serif\"><span style=\"font-style:normal\"><span style=\"font-variant-ligatures:normal\"><span style=\"font-weight:400\"><span style=\"white-space:normal\"><span style=\"background-color:#ffffff\"><span style=\"text-decoration-thickness:initial\"><span style=\"text-decoration-style:initial\"><span style=\"text-decoration-color:initial\"><span style=\"font-size:11pt\"><span style=\"font-family:&quot;Arial MT&quot;, sans-serif\">Selon de nouvelles donn&eacute;es de l&#39;universit&eacute; tha&iuml;landaise de Chiang Mai, le&nbsp;Vaccin COVID-19&nbsp;d&rsquo;AstraZeneca&nbsp;(ChAdOx1-S [recombinant]) est efficace pour pr&eacute;venir les infections COVID-&nbsp;19&nbsp;dues &agrave;&nbsp;Omicron&nbsp;lorsqu&#39;il est&nbsp;utilis&eacute; comme&nbsp;quatri&egrave;me&nbsp;dose&nbsp;de&nbsp;rappel.<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n<span style=\"font-size:small\"><span style=\"color:#222222\"><span style=\"font-family:Arial, Helvetica, sans-serif\"><span style=\"font-style:normal\"><span style=\"font-variant-ligatures:normal\"><span style=\"font-weight:400\"><span style=\"white-space:normal\"><span style=\"background-color:#ffffff\"><span style=\"text-decoration-thickness:initial\"><span style=\"text-decoration-style:initial\"><span style=\"text-decoration-color:initial\"><span style=\"font-size:11pt\"><span style=\"font-family:&quot;Arial MT&quot;, sans-serif\">Dans cette &eacute;tude de vie r&eacute;elle,&nbsp;Le Vaccin COVID-19 d&rsquo;AstraZeneca&nbsp;a montr&eacute; une efficacit&eacute;&nbsp;vaccinale (EV) de 73% (intervalle de confiance &agrave; 95% [IC]&nbsp;48-89%) contre la variante&nbsp;hautement transmissible d&rsquo;Omicron lorsqu&#39;une quatri&egrave;me dose est administr&eacute;e apr&egrave;s tout&nbsp;vaccin primaire ou de rappel.1&nbsp;Selon les auteurs de l&#39;&eacute;tude, il s&#39;agit des premi&egrave;res donn&eacute;es&nbsp;connues &eacute;valuant l&#39;efficacit&eacute; d&#39;un calendrier vaccinal mixte (h&eacute;t&eacute;rologue) &agrave; quatre doses de&nbsp;COVID-19.1<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n<span style=\"font-size:small\"><span style=\"color:#222222\"><span style=\"font-family:Arial, Helvetica, sans-serif\"><span style=\"font-style:normal\"><span style=\"font-variant-ligatures:normal\"><span style=\"font-weight:400\"><span style=\"white-space:normal\"><span style=\"background-color:#ffffff\"><span style=\"text-decoration-thickness:initial\"><span style=\"text-decoration-style:initial\"><span style=\"text-decoration-color:initial\"><span style=\"font-size:11pt\"><span style=\"font-family:&quot;Arial MT&quot;, sans-serif\">Les&nbsp;r&eacute;sultats&nbsp;ont&nbsp;&eacute;t&eacute;&nbsp;publi&eacute;s&nbsp;sous&nbsp;forme&nbsp;d&rsquo;une&nbsp;pr&eacute;publication&nbsp;dans&nbsp;Research&nbsp;Square.<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n<span style=\"font-size:small\"><span style=\"color:#222222\"><span style=\"font-family:Arial, Helvetica, sans-serif\"><span style=\"font-style:normal\"><span style=\"font-variant-ligatures:normal\"><span style=\"font-weight:400\"><span style=\"white-space:normal\"><span style=\"background-color:#ffffff\"><span style=\"text-decoration-thickness:initial\"><span style=\"text-decoration-style:initial\"><span style=\"text-decoration-color:initial\"><span style=\"font-size:11pt\"><span style=\"font-family:&quot;Arial MT&quot;, sans-serif\">Les donn&eacute;es ont montr&eacute; qu&#39;une quatri&egrave;me dose des vaccins COVID-19 &eacute;tudi&eacute;s, y compris le&nbsp;vaccin&nbsp;d&rsquo;AstraZeneca,&nbsp;est&nbsp;efficace&nbsp;&agrave;&nbsp;75%&nbsp;pour&nbsp;pr&eacute;venir&nbsp;l&#39;infection&nbsp;par&nbsp;Omicron&nbsp;(EV&nbsp;75%,&nbsp;95%&nbsp;IC 71-80%). L&rsquo;efficacit&eacute; vaccinale de 73% pour le&nbsp;Vaccin COVID-19 d&rsquo;AstraZeneca&nbsp;est&nbsp;similaire &agrave; celle observ&eacute;e avec les vaccins &agrave; ARNm pr&eacute;sentant une EV de 71% (EV 71%, IC&nbsp;95% 59-79%). L&rsquo;EV a &eacute;t&eacute; ajust&eacute;e en fonction de l&#39;&acirc;ge, du sexe, du calendrier et du type de&nbsp;vaccination&nbsp;ant&eacute;rieure.<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n<span style=\"font-size:small\"><span style=\"color:#222222\"><span style=\"font-family:Arial, Helvetica, sans-serif\"><span style=\"font-style:normal\"><span style=\"font-variant-ligatures:normal\"><span style=\"font-weight:400\"><span style=\"white-space:normal\"><span style=\"background-color:#ffffff\"><span style=\"text-decoration-thickness:initial\"><span style=\"text-decoration-style:initial\"><span style=\"text-decoration-color:initial\"><span style=\"font-size:11pt\"><span style=\"font-family:&quot;Arial MT&quot;, sans-serif\">L&#39;auteur principal, le professeur &eacute;m&eacute;rite Suwat Chariyalertsak, MD, Dr.PH, de la facult&eacute; de&nbsp;sant&eacute; publique de l&#39;universit&eacute; de Chiang Mai, en Tha&iuml;lande, a d&eacute;clar&eacute; : &quot;Cette &eacute;tude fournit&nbsp;des&nbsp;donn&eacute;es&nbsp;indispensables&nbsp;montrant&nbsp;qu&#39;une quatri&egrave;me dose de&nbsp;n&#39;importe&nbsp;quel&nbsp;vaccin&nbsp;COVID-19&nbsp;peut&nbsp;aider&nbsp;&agrave;&nbsp;pr&eacute;venir&nbsp;l&#39;infection&nbsp;due&nbsp;&agrave;&nbsp;la&nbsp;variante&nbsp;Omicron&nbsp;hautement&nbsp;contagieuse.&nbsp;Offrir&nbsp;une&nbsp;protection&nbsp;continue&nbsp;gr&acirc;ce&nbsp;au&nbsp;rappel&nbsp;est&nbsp;particuli&egrave;rement&nbsp;important&nbsp;pour&nbsp;les&nbsp;groupes&nbsp;&agrave;&nbsp;risque&nbsp;tels&nbsp;que&nbsp;les&nbsp;personnes&nbsp;&acirc;g&eacute;es&nbsp;et&nbsp;les&nbsp;personnes&nbsp;souffrant&nbsp;de&nbsp;maladies&nbsp;chroniques.&nbsp;Les&nbsp;donn&eacute;es&nbsp;soutiennent&nbsp;&eacute;galement&nbsp;l&#39;efficacit&eacute;&nbsp;des&nbsp;sch&eacute;mas&nbsp;de&nbsp;vaccination&nbsp;h&eacute;t&eacute;rologues,&nbsp;ou&nbsp;&quot;mix&nbsp;and&nbsp;match&quot;,&nbsp;qui&nbsp;peuvent&nbsp;contribuer&nbsp;&agrave;&nbsp;l&rsquo;augmentation&nbsp;de&nbsp;la&nbsp;couverture&nbsp;de&nbsp;la&nbsp;population&nbsp;par&nbsp;les&nbsp;doses&nbsp;de&nbsp;rappel.&quot;<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n<span style=\"font-size:small\"><span style=\"color:#222222\"><span style=\"font-family:Arial, Helvetica, sans-serif\"><span style=\"font-style:normal\"><span style=\"font-variant-ligatures:normal\"><span style=\"font-weight:400\"><span style=\"white-space:normal\"><span style=\"background-color:#ffffff\"><span style=\"text-decoration-thickness:initial\"><span style=\"text-decoration-style:initial\"><span style=\"text-decoration-color:initial\"><span style=\"font-size:11pt\"><span style=\"font-family:&quot;Arial MT&quot;, sans-serif\">John Perez, Vice-pr&eacute;sident principal, responsable de l&rsquo;Unit&eacute; Vaccins et Immunoth&eacute;rapies en&nbsp;fin de d&eacute;veloppement, AstraZeneca, a ajout&eacute; : &quot; Ces nouvelles donn&eacute;es nous permettent de&nbsp;comprendre l&#39;importance des doses de rappel dans la protection contre l&#39;infection par le&nbsp;COVID-19 dans un paysage caract&eacute;ris&eacute; par des variantes en &eacute;volution. En s&#39;appuyant sur&nbsp;l&#39;efficacit&eacute;&nbsp;du&nbsp;Vaccin&nbsp;COVID-19&nbsp;d&rsquo;AstraZeneca&nbsp;dans&nbsp;la&nbsp;pr&eacute;vention&nbsp;des&nbsp;maladies&nbsp;graves&nbsp;et&nbsp;des&nbsp;d&eacute;c&egrave;s, nous savons maintenant que ce dernier peut aider &agrave; pr&eacute;venir les infections li&eacute;es &agrave;&nbsp;l&#39;Omicron&nbsp;lorsqu&#39;il&nbsp;est&nbsp;administr&eacute;&nbsp;comme&nbsp;quatri&egrave;me&nbsp;dose,&nbsp;avec&nbsp;une&nbsp;protection&nbsp;contre&nbsp;l&#39;infection&nbsp;plus&nbsp;importante que celle&nbsp;observ&eacute;e&nbsp;apr&egrave;s une&nbsp;troisi&egrave;me&nbsp;dose.&quot;<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n<span style=\"font-size:small\"><span style=\"color:#222222\"><span style=\"font-family:Arial, Helvetica, sans-serif\"><span style=\"font-style:normal\"><span style=\"font-variant-ligatures:normal\"><span style=\"font-weight:400\"><span style=\"white-space:normal\"><span style=\"background-color:#ffffff\"><span style=\"text-decoration-thickness:initial\"><span style=\"text-decoration-style:initial\"><span style=\"text-decoration-color:initial\"><span style=\"font-size:11pt\"><span style=\"font-family:&quot;Arial MT&quot;, sans-serif\">Par ailleurs, une analyse pr&eacute;liminaire des donn&eacute;es hospitali&egrave;res fait &eacute;tat d&#39;une protection&nbsp;contre les infections graves li&eacute;es &agrave; la COVID-19 (n&eacute;cessitant une ventilation m&eacute;canique&nbsp;invasive) et les d&eacute;c&egrave;s pendant la vague Omicron en f&eacute;vrier et mars 2021. Dans tous les&nbsp;groupes d&#39;&acirc;ge &eacute;tudi&eacute;s, un calendrier mixte de trois doses a fourni une protection de 98 %&nbsp;contre les infections graves ou les d&eacute;c&egrave;s li&eacute;s au COVID-19. Apr&egrave;s un rappel de la quatri&egrave;me&nbsp;dose,&nbsp;les&nbsp;auteurs&nbsp;n&#39;ont&nbsp;observ&eacute;&nbsp;qu&#39;un&nbsp;seul&nbsp;d&eacute;c&egrave;s,&nbsp;chez&nbsp;une&nbsp;personne&nbsp;pr&eacute;sentant&nbsp;des&nbsp;comorbidit&eacute;s, ce qui sugg&egrave;re une tr&egrave;s grande efficacit&eacute;. L&#39;analyse de cet ensemble de&nbsp;donn&eacute;es est&nbsp;en&nbsp;cours&nbsp;et&nbsp;fera&nbsp;l&#39;objet&nbsp;d&#39;un&nbsp;rapport&nbsp;ult&eacute;rieur.<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n<span style=\"font-size:small\"><span style=\"color:#222222\"><span style=\"font-family:Arial, Helvetica, sans-serif\"><span style=\"font-style:normal\"><span style=\"font-variant-ligatures:normal\"><span style=\"font-weight:400\"><span style=\"white-space:normal\"><span style=\"background-color:#ffffff\"><span style=\"text-decoration-thickness:initial\"><span style=\"text-decoration-style:initial\"><span style=\"text-decoration-color:initial\"><span style=\"font-size:11pt\"><span style=\"font-family:&quot;Arial MT&quot;, sans-serif\">L&#39;&eacute;tude d&eacute;crit l&rsquo;efficacit&eacute; vaccinale r&eacute;elle des vaccins COVID-19 d&rsquo;AstraZeneca, CoronaVac&nbsp;et ARNm en utilisant un r&eacute;seau de surveillance active qui permet de comparer les m&ecirc;mes&nbsp;profils&nbsp;de&nbsp;patients&nbsp;dans les&nbsp;p&eacute;riodes&nbsp;de&nbsp;circulation&nbsp;et&nbsp;de&nbsp;pr&eacute;dominance&nbsp;du&nbsp;Delta&nbsp;et&nbsp;Omicron.1<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n<span style=\"font-size:small\"><span style=\"color:#222222\"><span style=\"font-family:Arial, Helvetica, sans-serif\"><span style=\"font-style:normal\"><span style=\"font-variant-ligatures:normal\"><span style=\"font-weight:400\"><span style=\"white-space:normal\"><span style=\"background-color:#ffffff\"><span style=\"text-decoration-thickness:initial\"><span style=\"text-decoration-style:initial\"><span style=\"text-decoration-color:initial\"><span style=\"font-size:11pt\"><span style=\"font-family:&quot;Arial MT&quot;, sans-serif\">&Agrave;&nbsp;ce&nbsp;jour,&nbsp;plus&nbsp;de&nbsp;3&nbsp;milliards&nbsp;de&nbsp;doses&nbsp;de&nbsp;vaccins&nbsp;COVID-19 d&rsquo;AstraZeneca&nbsp;ont&nbsp;&eacute;t&eacute;&nbsp;distribu&eacute;es,&nbsp;et&nbsp;ce&nbsp;qui,&nbsp;selon&nbsp;les&nbsp;r&eacute;sultats&nbsp;du&nbsp;mod&egrave;le&nbsp;des&nbsp;r&eacute;sultats,&nbsp;aurait&nbsp;permis&nbsp;de&nbsp;sauver&nbsp;plus&nbsp;de&nbsp;6&nbsp;millions&nbsp;de vies&nbsp;entre le 8 d&eacute;cembre 2020&nbsp;et&nbsp;le 8&nbsp;d&eacute;cembre&nbsp;2021.&nbsp;<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Selon de nouvelles donn&eacute;es de l&#39;universit&eacute; tha&iuml;landaise de Chiang Mai, le&nbsp;Vaccin COVID-19&nbsp;d&rsquo;AstraZeneca&nbsp;(ChAdOx1-S [recombinant]) est efficace pour pr&eacute;venir les infections COVID-&nbsp;19&nbsp;dues &agrave;&nbsp;Omicron&nbsp;lorsqu&#39;il est&nbsp;utilis&eacute; comme&nbsp;quatri&egrave;me&nbsp;dose&nbsp;de&nbsp;rappel. Dans cette &eacute;tude de vie r&eacute;elle,&nbsp;Le Vaccin&hellip;<\/p>\n","protected":false},"author":60,"featured_media":236364,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2515],"tags":[],"class_list":["post-275570","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sante"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Etude\/ Omicron: Une 4e dose du Vaccin d\u2019AstraZeneca\u00a0est efficace \u00e0 73% pour pr\u00e9venir des infections - R\u00e9alit\u00e9s Magazine<\/title>\n<meta name=\"description\" content=\"Selon de nouvelles donn&eacute;es de l&#039;universit&eacute; tha&iuml;landaise de Chiang Mai, le&nbsp;Vaccin\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/realites.com.tn\/fr\/etude-omicron-une-4e-dose-du-vaccin-d-astrazeneca-est-efficace-a-73-pour-prevenir-des-infections\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Etude\/ Omicron: Une 4e dose du Vaccin d\u2019AstraZeneca\u00a0est efficace \u00e0 73% pour pr\u00e9venir des infections - R\u00e9alit\u00e9s Magazine\" \/>\n<meta property=\"og:description\" content=\"Selon de nouvelles donn&eacute;es de l&#039;universit&eacute; 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