



{"id":4749,"date":"2016-09-27T18:26:23","date_gmt":"2016-09-27T16:26:23","guid":{"rendered":"http:\/\/www.largeur.com\/?p=4749"},"modified":"2016-09-27T18:26:23","modified_gmt":"2016-09-27T16:26:23","slug":"sante","status":"publish","type":"post","link":"https:\/\/largeur.com\/?p=4749","title":{"rendered":"Epid\u00e9mies intercept\u00e9es en vol"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/201408\/27092016_1.jpg\" alt=\"27092016_1.jpg\" title=\"27092016_1.jpg\" width=\"468\" height=\"311\" border=\"0\" \/><\/p>\n<p>Rares sont ceux qui s\u2019interrogent sur le destin de leurs d\u00e9jections lorsqu\u2019ils tirent une chasse d\u2019eau en vol. Mais pour Frank M\u00f8ller Aarestrup, professeur \u00e0 la Danmarks Tekniske Universitet, celles-ci repr\u00e9sentent une mine d\u2019informations sur l\u2019origine et la diffusion de pathog\u00e8nes et de r\u00e9sistances antimicrobiennes. Il a fait la une des journaux l\u2019\u00e9t\u00e9 2015 en publiant des analyses ADN du contenu des toilettes de vols internationaux. Il estime aujourd\u2019hui que de telles analyses devraient devenir la norme.<\/p>\n<p>\u00abJ\u2019ai \u00e9t\u00e9 \u00e9tonn\u00e9 de la simplicit\u00e9 et du prix abordable de cette approche\u00bb, d\u00e9clare Frank M\u00f8ller Aarestrup. Gr\u00e2ce \u00e0 des techniques novatrices de s\u00e9quen\u00e7age ADN, il a pu d\u00e9tecter la quasi-totalit\u00e9 des microbes et des g\u00e8nes r\u00e9sistants dans les \u00e9chantillons. La propagation de maladies contagieuses est traditionnellement \u00e9tudi\u00e9e en identifiant des isolats cliniques de patients dans des laboratoires locaux. Les r\u00e9sultats doivent ensuite \u00eatre partag\u00e9s et \u00e9valu\u00e9s aux niveaux national et international. \u00abCela peut prendre des ann\u00e9es et les donn\u00e9es ne sont ni structur\u00e9es ni standardis\u00e9es, tandis que le s\u00e9quen\u00e7age ADN est standardis\u00e9, facile \u00e0 comparer et simple \u00e0 partager via internet\u00bb, explique le chercheur.<\/p>\n<p>En 2011, avec ses coll\u00e8gues, il a d\u00e9couvert que l\u2019\u00e9pid\u00e9mie de chol\u00e9ra \u00e0 Ha\u00efti avait \u00e9t\u00e9 d\u00e9clench\u00e9e par des soldats n\u00e9palais de l\u2019ONU. \u00abMalheureusement, il \u00e9tait d\u00e9j\u00e0 trop tard pour intervenir.\u00bb La technique est bien plus utile lorsqu\u2019on surveille la propagation d\u2019une \u00e9pid\u00e9mie en temps r\u00e9el. \u00abAux Etats-Unis, la FDA et la CDC l\u2019ont appliqu\u00e9e aux pathog\u00e8nes d\u2019origine alimentaire et ont ainsi pu mettre en place des interventions cibl\u00e9es.\u00bb<\/p>\n<p>Frank M\u00f8ller Aarestrup ne veut pas se limiter aux patients. \u00ab\u2009Nous voulons \u00e9tudier des populations enti\u00e8res cliniquement saines, afin d\u2019obtenir une meilleure vision d\u2019ensemble des pathog\u00e8nes et des r\u00e9sistances antimicrobiennes.\u2009\u00bb Telle \u00e9tait la logique de l\u2019analyse des toilettes d\u2019avion, qui va d\u00e9sormais \u00eatre \u00e9tendue aux canalisations des eaux us\u00e9es. <\/p>\n<p>Le chercheur a calcul\u00e9 qu\u2019en r\u00e9alisant localement des s\u00e9quen\u00e7ages ADN, il serait possible d\u2019analyser 1000 sites par semaine pour environ 2 millions d\u2019euros par an. \u00abCe n\u2019est rien \u00e0 c\u00f4t\u00e9 des co\u00fbts actuels d\u2019\u00e9chantillonnage et d\u2019analyse d\u2019isolats, cliniques ou non. En surveillant les zones \u00e0 forte densit\u00e9 de population, nous pourrions am\u00e9liorer notre connaissance des voies de propagation et d\u00e9celer plus t\u00f4t les situations \u00e0 risques. A l\u2019\u00e9chelle mondiale, environ 22% des d\u00e9c\u00e8s sont provoqu\u00e9s par des maladies contagieuses. Nous devrions pouvoir r\u00e9duire ce chiffre de moiti\u00e9.\u00bb<br \/>\n_______<\/p>\n<p>Une version de cet article est parue dans le magazine Technologist (no 8).<\/p>\n<p>Pour souscrire un abonnement \u00e0 Technologist au prix de CHF 45.- (42 euros) pour 8 num\u00e9ros, rendez-vous sur <a target=\"_blank\" href=\"http:\/\/www.technologist.eu\/print-magazine\/subscribe\/\">technologist.eu<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les transports a\u00e9riens ont fortement acc\u00e9l\u00e9r\u00e9 la propagation de maladies \u00e0 travers le globe. Un professeur danois met le contenu des toilettes d\u2019avion sous la loupe du s\u00e9quen\u00e7age d\u2019ADN et r\u00e9v\u00e8le ainsi de pr\u00e9cieux indices sur la diffusion des maladies infectieuses.<\/p>\n","protected":false},"author":20212,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-4749","post","type-post","status-publish","format-standard","hentry","category-technophile","technophile"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Gorm Palmgren\"\/>\n\t<meta name=\"keywords\" content=\"technophile\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/largeur.com\/?p=4749\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.8\" \/>\n\t\t<meta property=\"og:locale\" content=\"fr_FR\" 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