{"id":201221,"date":"2021-01-14T17:56:36","date_gmt":"2021-01-14T16:56:36","guid":{"rendered":"https:\/\/www.realites.com.tn\/?p=201221"},"modified":"2021-01-14T17:56:36","modified_gmt":"2021-01-14T16:56:36","slug":"covid-19-que-sait-on-des-rares-personnes-ayant-fait-une-reaction-allergique-grave-au-vaccin","status":"publish","type":"post","link":"https:\/\/realites.com.tn\/fr\/covid-19-que-sait-on-des-rares-personnes-ayant-fait-une-reaction-allergique-grave-au-vaccin\/","title":{"rendered":"Covid-19 : que sait-on des (rares) personnes ayant fait une r\u00e9action allergique grave au vaccin ?"},"content":{"rendered":"<div>Le vaccin \u00e0 ARNm d\u00e9velopp\u00e9 par Pfizer et BioNTech pour lutter contre le Covid-19 a provoqu\u00e9 quelques r\u00e9actions allergiques s\u00e9v\u00e8res aux \u00c9tats-Unis. Quel est le profil des rares Am\u00e9ricains qui en ont \u00e9t\u00e9 victimes ?<\/div>\n<div>Alors que la campagne vaccinale contre le Covid-19 est lanc\u00e9e depuis plusieurs semaines d\u00e9sormais dans le monde, le ministre fran\u00e7ais de la Sant\u00e9, Olivier V\u00e9ran a annonc\u00e9 qu\u2019il n\u2019y avait eu qu\u2019un seul cas d\u2019allergie grave, \u201c\u00e0 l\u2019issue favorable\u201d, d\u00e9tect\u00e9 en France apr\u00e8s les 138 000 vaccinations contre le Covid-19.<\/div>\n<div>Une fr\u00e9quence rare, \u00e0 l\u2019image de ce que l\u2019on peut observer \u00e0 l\u2019\u00e9tranger. Aux \u00c9tats-Unis, les autorit\u00e9s sanitaires ont annonc\u00e9 la semaine derni\u00e8re avoir observ\u00e9 21 cas d\u2019allergies s\u00e9v\u00e8res li\u00e9es au vaccin Pfizer sur les 1,89 millions de doses administr\u00e9es au 23 d\u00e9cembre, soit une anaphylaxie toutes les 90 000 injections. Un taux plus \u00e9lev\u00e9 que celui observ\u00e9 en France mais qui reste toutefois tr\u00e8s faible (0,001%). Aucune des personnes concern\u00e9es par ces r\u00e9actions graves n\u2019est d\u00e9c\u00e9d\u00e9e.<\/div>\n<div><\/div>\n<div><strong>*90% de femmes<\/strong><\/div>\n<div>Les autorit\u00e9s sanitaires am\u00e9ricaines ont donn\u00e9 des informations sur les 21 personnes victimes d\u2019anaphylaxie afin de tenter d\u2019en savoir plus sur les raisons de ces r\u00e9actions allergiques s\u00e9v\u00e8res. Sur ces 21 cas d\u2019anaphylaxie, 19 ont \u00e9t\u00e9 d\u00e9tect\u00e9s chez des femmes, soit 90%. Ces 21 personnes avaient entre 27 et 60 ans, avec une m\u00e9diane \u00e0 40 ans et 81% d\u2019entre elles avaient d\u00e9j\u00e0 fait des r\u00e9actions allergiques plus ou moins graves par le pass\u00e9. Il faut \u00e9galement noter qu\u2019en moyenne, ces r\u00e9actions allergiques sont apparues 13 minutes apr\u00e8s l\u2019injection.<\/div>\n<div><\/div>\n<div><strong>*Un tiers avait d\u00e9j\u00e0 fait une allergie grave<\/strong><\/div>\n<div>Les autorit\u00e9s am\u00e9ricaines informent \u00e9galement que sur les 21 cas d\u2019anaphylaxie, 7 avaient d\u00e9j\u00e0 fait au moins une anaphylaxie par le pass\u00e9 notamment suite \u00e0 une piq\u00fbre de m\u00e9duse, au vaccin contre la rage, \u00e0 l\u2019ingestion de noix ou encore \u00e0 une prise de m\u00e9dicaments.<\/div>\n<div>La pr\u00e9sence dans le vaccin du poly\u00e9thyl\u00e8ne glycol (PEG) pourrait \u00eatre une des explications \u00e0 ces quelques r\u00e9actions allergiques observ\u00e9es. Il s\u2019agit d\u2019une substance utilis\u00e9e dans plusieurs produits courants tels que le laxatif, le shampoing ou encore le dentifrice, mais elle n\u2019avait jamais \u00e9t\u00e9 employ\u00e9e dans un vaccin, comme le rappelle FranceInfo.<\/div>\n<div>Sur son compte Twitter, l\u2019\u00e9pid\u00e9miologiste et doctorant en sant\u00e9 publique \u00e0 l\u2019Inserm (France), Thibault Fiolet note qu\u2019il y a donc 11 anaphylaxies sur chaque million d\u2019injections du vaccin Pfizer\/BioNTech aux \u00c9tats-Unis, contre 100 anaphylaxies par million d\u2019anesth\u00e9si\u00e9s en France. Il rappelle \u00e9galement qu\u2019il y a une anaphylaxie alimentaire tous les 5 jours en France, rappelant ainsi que ces chiffres d\u2019allergies graves li\u00e9es au vaccin restent tr\u00e8s faibles.<\/div>\n<div style=\"text-align: right\">Yahoo Actualit\u00e9s<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Le vaccin \u00e0 ARNm d\u00e9velopp\u00e9 par Pfizer et BioNTech pour lutter contre le Covid-19 a provoqu\u00e9 quelques r\u00e9actions allergiques s\u00e9v\u00e8res aux \u00c9tats-Unis. Quel est le profil des rares Am\u00e9ricains qui&hellip;<\/p>\n","protected":false},"author":60,"featured_media":201222,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[7],"tags":[],"class_list":["post-201221","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-monde"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Covid-19 : que sait-on des (rares) personnes ayant fait une r\u00e9action allergique grave au vaccin ? - R\u00e9alit\u00e9s Magazine<\/title>\n<meta name=\"description\" content=\"Le vaccin \u00e0 ARNm d\u00e9velopp\u00e9 par Pfizer et BioNTech pour lutter contre le Covid-19 a provoqu\u00e9 quelques r\u00e9actions allergiques s\u00e9v\u00e8res aux \u00c9tats-Unis. 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