{"id":35829,"date":"2020-09-11T14:34:17","date_gmt":"2020-09-11T12:34:17","guid":{"rendered":"https:\/\/agoraexpat.com\/vaccin-covid-19-ou-en-est-la-recherche\/"},"modified":"2020-11-16T14:47:17","modified_gmt":"2020-11-16T13:47:17","slug":"vaccin-covid-19-ou-en-est-la-recherche","status":"publish","type":"post","link":"https:\/\/agoraexpat.com\/en\/vaccin-covid-19-ou-en-est-la-recherche\/","title":{"rendered":"Covid-19 vaccine: where are we?"},"content":{"rendered":"
[et_pb_section fb_built=”1″ _builder_version=”3.27.3″ background_color_gradient_direction=”110deg” background_enable_image=”off” background_position=”bottom_center” background_blend=”multiply” custom_margin=”||||false|false” custom_margin_last_edited=”off|desktop” custom_padding=”||0px||false|false” locked=”off”][et_pb_row _builder_version=”3.27.3″ max_width=”850px”][et_pb_column type=”4_4″ _builder_version=”3.27.1″][et_pb_text _builder_version=”4.6.1″ text_font=”Lato||||||||” text_font_size=”22px” text_line_height=”1.8em” header_font=”|700|||||||” header_text_color=”#000000″ header_font_size=”40px” header_line_height=”1.2em” background_layout=”dark” width=”80%” width_tablet=”100%” width_phone=”” width_last_edited=”on|tablet” text_font_size_tablet=”” text_font_size_phone=”18px” text_font_size_last_edited=”on|phone” header_font_size_tablet=”40px” header_font_size_phone=”35px” header_font_size_last_edited=”on|phone”]<\/p>\n
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Alors que la Covid-19 a fait plus de 700 000 d\u00e9c\u00e8s dans le monde, les multinationales pharmaceutiques se sont lanc\u00e9es dans une course au vaccin afin de freiner les contaminations. A ce jour 26 vaccins sont au stade des essais cliniques c\u2019est-\u00e0-dire test\u00e9s sur l\u2019\u00eatre humain).
Si les essais sont encourageants, aucun vaccin n\u2019est pour l\u2019instant s\u00fbr et efficace.<\/p>\n
Quels sont les projets les plus avanc\u00e9s\u00a0?<\/b><\/p>\n
R\u00e9cemment la Russie a annonc\u00e9 avoir d\u00e9velopp\u00e9 le premier vaccin efficace contre la COVID 19.<\/p>\n
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Cependant l\u2019OMS appelle \u00e0 la prudence car il n\u2019y a pas de donn\u00e9es connues concernant l\u2019efficacit\u00e9,\u00a0la qualit\u00e9 et la s\u00e9curit\u00e9 de ce vaccin.
\nLe recul sur ce vaccin n\u2019\u00e9tant que de quelques semaines, ni la dur\u00e9e de l\u2019immunit\u00e9 ni l\u2019efficacit\u00e9 ne sont prouv\u00e9es.<\/br>Les Etats-Unis, la Chine et l\u2019Europe sont aussi dans la course.<\/br>Les Etats-unis, qui ont consid\u00e9rablement investi dans le d\u00e9veloppement du vaccin, ont des r\u00e9sultats prometteurs avec quelques effets secondaires l\u00e9gers tels que maux de t\u00eate, douleurs au bras, fatigue, frissons ou fi\u00e8vre.
\nL\u2019Europe en est au m\u00eame stade avec aussi peu d\u2019effets secondaires.<\/p>\n
Quelles sont les technologies qui permettent de d\u00e9velopper le vaccin\u00a0?<\/b><\/p>\n
La plus ancienne m\u00e9thode consiste \u00e0 construire un vaccin sur une version att\u00e9nu\u00e9e ou inactiv\u00e9e du virus original.<\/br>Une m\u00e9thode plus moderne consiste \u00e0 fonder le vaccin sur un \u00ab\u00a0vecteur\u00a0\u00bb \u2013 le virus de la rougeole ou un ad\u00e9novirus g\u00e9n\u00e9tiquement modifi\u00e9 pour exprimer l\u2019antig\u00e8ne souhait\u00e9.<\/br>La derni\u00e8re m\u00e9thode, la plus futuriste est bas\u00e9e sur l\u2019ADN ou l\u2019ARN (acide ribonucl\u00e9ique) pour transmettre \u00e0 nos cellules les instructions de fabrication de l\u2019antig\u00e8ne (fragment bien pr\u00e9cis d\u2019un virus capable de d\u00e9clencher une r\u00e9action immunitaire, avec la formation d\u2019anticorps cibl\u00e9s). S\u2019inspirant de cet ARN naturel, les scientifiques sont aujourd\u2019hui capables de synth\u00e9tiser de l\u2019ARN artificiel qui comporte des instructions suppl\u00e9mentaires pour nos cellules. L\u2019objectif est de leur faire fabriquer cet antig\u00e8ne.<\/p>\n
Quand pourra-t-on disposer d\u2019un vaccin\u00a0?<\/b><\/p>\n
La mise au point d\u2019un vaccin prend en g\u00e9n\u00e9ral une dizaine d\u2019ann\u00e9e avant d\u2019\u00eatre disponible. Mais l\u2019urgence sanitaire que nous traversons a acc\u00e9l\u00e9r\u00e9 le processus.<\/br>Malgr\u00e9 tout, les essais cliniques restent une \u00e9tape incompressible. En effet, la vaccination de la population \u00e0 grande \u00e9chelle ne peut \u00eatre faite que si l\u2019on a des donn\u00e9es suffisantes sur l\u2019efficacit\u00e9 et la s\u00e9curit\u00e9 du vaccin.<\/br>C\u2019est pourquoi les infectiologues et immunologistes indiquent qu\u2019un vaccin pourrait ne pas \u00eatre disponible avant le printemps 2021.<\/p>\n
[\/et_pb_text][et_pb_button button_url=”https:\/\/agoraexpat.com\/en\/blog\/” button_text=”Toutes les actualit\u00e9s” button_alignment=”center” _builder_version=”3.27.3″ custom_button=”on” button_text_size=”14px” button_bg_color=”#ef562d” button_border_color=”rgba(0,0,0,0)” button_border_radius=”0px” button_letter_spacing=”2px” button_font=”|900||on|||||” button_icon=”%%2%%” button_icon_placement=”left” background_layout=”dark” custom_margin=”40px||” custom_padding=”16px|30px|16px|30px|true|true” button_bg_color__hover_enabled=”on” button_bg_color__hover=”#e02b20″ button_bg_enable_color__hover=”on” custom_padding__hover_enabled=”on|hover” custom_padding__hover=”|30px||43px|true|false”][\/et_pb_button][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ admin_label=”5-6 Blog Divi Layout Kit” module_class=”blog_5″ _builder_version=”3.27.3″ background_color=”#f4f4f4″ transparent_background=”off” make_fullwidth=”off” use_custom_width=”off” width_unit=”on” locked=”off”][et_pb_row _builder_version=”3.27.1″][et_pb_column type=”4_4″ _builder_version=”3.27.1″ custom_padding=”|||” custom_padding__hover=”|||”][et_pb_text _builder_version=”3.27.4″ text_font=”Lato||||||||” text_font_size=”22px” text_line_height=”1.8em” header_font=”|700|||||||” header_text_color=”#000000″ header_font_size=”40px” header_line_height=”1.2em” background_layout=”dark” text_font_size_tablet=”” text_font_size_phone=”18px” text_font_size_last_edited=”on|phone” header_font_size_tablet=”40px” header_font_size_phone=”35px” header_font_size_last_edited=”on|phone”]<\/p>\n
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Nous d\u00e9terminerons ensemble<\/br>l\u2019assurance la mieux adapt\u00e9e \u00e0 vos besoins.<\/p>\n
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Scientists all around the world are racing to produce a\u00a0safe and effective vaccine…<\/p>\n","protected":false},"author":2,"featured_media":35824,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"2880","inline_featured_image":false,"footnotes":""},"categories":[22],"tags":[],"dipi_cpt_category":[],"class_list":["post-35829","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-international-en"],"yoast_head":"\n