{"id":1575,"date":"2023-01-13T17:09:59","date_gmt":"2023-01-13T16:09:59","guid":{"rendered":"https:\/\/feeli.io\/blog\/?p=1575"},"modified":"2026-05-11T23:01:12","modified_gmt":"2026-05-11T21:01:12","slug":"contagiosite-covid-19-duree","status":"publish","type":"post","link":"https:\/\/feeli.io\/blog\/contagiosite-covid-19-duree\/","title":{"rendered":"Contagiosit\u00e9 COVID-19 : comment limiter la propagation du virus ?"},"content":{"rendered":"\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">La <strong>contagiosit\u00e9 du COVID-19<\/strong> ne cesse d\u2019\u00e9voluer, en raison des modifications que subit la souche du virus d\u2019une ann\u00e9e \u00e0 l\u2019autre.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Il n\u2019est d\u2019ailleurs pas le seul virus \u00e0 muter, puisque le <a href=\"https:\/\/feeli.io\/blog\/vaccin-grippe-saisonniere\/\">vaccin de la grippe<\/a> doit \u00eatre r\u00e9vis\u00e9 d\u2019une ann\u00e9e \u00e0 l\u2019autre en fonction des pr\u00e9visions \u00e9pid\u00e9miologiques. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La pr\u00e9vention de cette maladie respiratoire aigu\u00eb repose essentiellement sur la vaccination et les gestes barri\u00e8res.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019\u00e9quipe m\u00e9dicale de Feeli fait le point sur le COVID-19 : o\u00f9 en sommes-nous aujourd\u2019hui ? Combien de temps dure la contagiosit\u00e9 du COVID ? Quand se faire tester ?<\/p>\n\n\n\n<div class=\"wp-block-cover aligncenter is-light padding:20px;\" style=\"min-height:310px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" class=\"wp-block-cover__image-background wp-image-2861\" alt=\"\" src=\"https:\/\/feeli.io\/blog\/wp-content\/uploads\/2023\/06\/Design-sans-titre-1-2.png\" data-object-fit=\"cover\" srcset=\"https:\/\/feeli.io\/blog\/wp-content\/uploads\/2023\/06\/Design-sans-titre-1-2.png 500w, https:\/\/feeli.io\/blog\/wp-content\/uploads\/2023\/06\/Design-sans-titre-1-2-300x300.png 300w, https:\/\/feeli.io\/blog\/wp-content\/uploads\/2023\/06\/Design-sans-titre-1-2-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim wp-block-cover__gradient-background has-background-gradient\" style=\"background:linear-gradient(135deg,rgba(38,181,169,0.11) 0%,rgba(38,181,169,0.11) 100%)\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center wp-block-heading has-text-color wp-block-paragraph\" style=\"color:#26b4a9;font-size:28px\"><strong>Consultez un m\u00e9decin en ligne<\/strong> <\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:15px\">Besoin d\u2019un&nbsp;<strong>m\u00e9decin sans RDV&nbsp;<\/strong>? <br>Consultez rapidement en ligne. <br>Possibilit\u00e9 de recevoir un&nbsp;<strong>traitement<\/strong>&nbsp;adapt\u00e9 si n\u00e9cessaire. <br><em>Consultation&nbsp;par messagerie instantan\u00e9e<\/em>.<\/p>\n\n\n\n<div class=\"wp-block-group alignwide is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-20d0575b wp-block-group-is-layout-flex\">\n<div class=\"wp-block-buttons alignwide is-content-justification-center is-nowrap is-layout-flex wp-container-core-buttons-is-layout-5d0ac371 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100 is-style-outline is-style-outline--1\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/feeli.io\/symptome\/generaliste?utm_source=feeli-blog&amp;utm_channel=seo\" style=\"border-radius:100px;background:linear-gradient(135deg,rgb(42,170,224) 1%,rgb(182,227,212) 100%,rgb(41,216,193) 100%)\"><strong>Consulter d\u00e8s maintenant <\/strong>\ud83d\udcac<\/a><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<ol style=\"background-color:#26b5a91c\" class=\"wp-block-list has-background\">\n<li><strong><a href=\"#1\">Contagiosit\u00e9 du COVID : d\u00e9finition, facteurs de risque<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"#3\">Contagiosit\u00e9 COVID : comment se transmet le virus ?<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"#6\">Combien de temps est-on positif au COVID ?<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"#6\">Quand faire un test COVID ?<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"#9\">Comment pr\u00e9venir la contagiosit\u00e9 du COVID-19 ?<\/a><\/strong><\/li>\n<\/ol>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-color\" style=\"color:#26b4a9;font-size:25px\"><strong><a id=\"1\">Contagiosit\u00e9 du COVID : d\u00e9finition, facteurs de risque<\/a><\/strong><\/h2>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Le <a href=\"https:\/\/feeli.io\/symptome\/covid19\">COVID-19<\/a> est une<strong> infection virale<\/strong>, caract\u00e9ris\u00e9e par des<strong> sympt\u00f4mes respiratoires aigus<\/strong>. Cette maladie, potentiellement grave, est caus\u00e9e par un nouveau type de coronavirus, le <strong>SARS-CoV-2<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Signal\u00e9 pour la premi\u00e8re fois fin 2019 dans la r\u00e9gion de Wuhan en Chine, le COVID-19 est \u00e0 l\u2019origine d\u2019une pand\u00e9mie (\u00e9pid\u00e9mie mondiale).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019infection par le SARS-CoV-2 entra\u00eene un spectre de sympt\u00f4mes assez large, pouvant aller de l\u2019insuffisance respiratoire asymptomatique (non grave) au d\u00e9c\u00e8s de la personne.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Plusieurs <strong>facteurs de risque<\/strong> de d\u00e9velopper une<strong> forme grave du COVID<\/strong> ont par ailleurs \u00e9t\u00e9 identifi\u00e9s par les m\u00e9decins :&nbsp;<\/p>\n\n\n\n<ul style=\"background-color:#26b5a91c\" class=\"wp-block-list has-background\">\n<li>L\u2019\u00e2ge avanc\u00e9 ;<\/li>\n\n\n\n<li>Une d\u00e9faillance du syst\u00e8me immunitaire, comme une immunod\u00e9pression ;<\/li>\n\n\n\n<li>Les maladies chroniques (ou comorbidit\u00e9s), comme une maladie r\u00e9nale chronique, le diab\u00e8te, etc. ;<\/li>\n\n\n\n<li>Ou encore la grossesse.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Bien que la <strong>souche du virus<\/strong> \u00e9volue d\u2019une ann\u00e9e \u00e0 l\u2019autre, les vaccins se sont montr\u00e9s assez efficaces dans la <strong>pr\u00e9vention de la transmission du COVID<\/strong> et tr\u00e8s efficaces pour <strong>pr\u00e9venir la mortalit\u00e9<\/strong> et le d\u00e9veloppement des maladies graves.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u2019autres <strong>mesures de pr\u00e9vention de la contagiosit\u00e9<\/strong> du coronavirus comprennent les gestes barri\u00e8res, parmi lesquels :&nbsp;<\/p>\n\n\n\n<ul style=\"background-color:#26b5a91c\" class=\"wp-block-list has-background\">\n<li>Le <strong>port d\u2019un masque<\/strong> ;<\/li>\n\n\n\n<li>La <strong>distanciation sociale<\/strong> ;<\/li>\n\n\n\n<li>Le<strong> lavage des mains<\/strong> ;<\/li>\n\n\n\n<li>L\u2019<strong>isolement des malades<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Le diagnostic du COVID repose sur le test PCR ou antig\u00e9nique<\/strong>, qui permet l\u2019analyse des s\u00e9cr\u00e9tions nasales respiratoires sup\u00e9rieures ou inf\u00e9rieures.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le traitement comprend le soulagement des sympt\u00f4mes, les <strong>m\u00e9dicaments antiviraux<\/strong>, les <strong>cortico\u00efdes<\/strong> ou l\u2019administration des <strong>anticorps monoclonaux<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour obtenir davantage d&rsquo;informations sur les tests, consultez <a href=\"https:\/\/feeli.io\/blog\/test-covid-quand-se-faire-tester\/\">test COVID : quand et o\u00f9 se faire tester ?<\/a><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-color\" style=\"color:#26b4a9;font-size:25px\"><strong><a id=\"3\">Contagiosit\u00e9 COVID : comment se transmet le virus ?<\/a><\/strong><\/h2>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Le COVID-19 se propage essentiellement par <strong>contact rapproch\u00e9<\/strong> :&nbsp;<\/p>\n\n\n\n<ul style=\"background-color:#26b5a91c\" class=\"wp-block-list has-background\">\n<li><strong>Lorsqu\u2019une personne infect\u00e9e \u00e9ternue, tousse, parle ou fait de l\u2019exercice<\/strong>, par l\u2019interm\u00e9diaire de <strong>gouttelettes respiratoires<\/strong> dispers\u00e9es dans l\u2019air (lire aussi <a href=\"https:\/\/feeli.io\/blog\/contagion-de-la-grippe\/\">contagion grippe<\/a>).&nbsp;<\/li>\n\n\n\n<li>Ces gouttelettes respiratoires peuvent parcourir de courtes distances et se d\u00e9poser directement sur les <strong>muqueuses<\/strong> d\u2019une personne. Certaines particules peuvent m\u00eame <strong>persister plusieurs heures dans l\u2019air<\/strong> et parcourir des distances plus longues (sup\u00e9rieures \u00e0 2 m) avant d\u2019\u00eatre inhal\u00e9es ;<\/li>\n\n\n\n<li>La <strong>contamination<\/strong> peut \u00e9galement avoir lieu lors d\u2019un <strong>contact direct avec une personne infect\u00e9e<\/strong>, lorsqu\u2019on s\u2019embrasse ou se serre la main, par exemple.&nbsp;<\/li>\n\n\n\n<li>Les <strong>s\u00e9cr\u00e9tions nasales<\/strong> d\u2019une individu infect\u00e9 peuvent \u00e9galement se retrouver sur des <strong>surfaces contamin\u00e9es<\/strong>. Un personne peut donc contracter le SARS-CoV-2 en touchant une surface contamin\u00e9e, avant de lui-m\u00eame toucher l\u2019une de ses muqueuses (yeux, bouche, nez, etc.).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Le <strong>virus du COVID<\/strong> est par ailleurs tr\u00e8s contagieux et se transmet facilement entre les personnes. De plus, la <strong>quantit\u00e9 de virus<\/strong> \u00e0 laquelle une personne est expos\u00e9e influence directement le risque de transmission.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">G\u00e9n\u00e9ralement, le risque de transmission est corr\u00e9l\u00e9 au temps pass\u00e9 avec une personne infect\u00e9e : plus l&rsquo;interaction avec une personne infect\u00e9e est longue et rapproch\u00e9e, <strong>plus le risque de contagion est \u00e9lev\u00e9<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De plus, les <strong>patients symptomatiques ou asymptomatiques<\/strong> peuvent transmettre le virus, ce qui complique le <strong>contr\u00f4le de la transmission<\/strong>. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une personne symptomatique est par ailleurs contagieuse quelques jours avant l\u2019apparition des sympt\u00f4mes, puis quelques jours apr\u00e8s.&nbsp;La <strong>charge virale<\/strong> dans les s\u00e9cr\u00e9tions respiratoires est n\u00e9anmoins plus \u00e9lev\u00e9e quelques jours apr\u00e8s le d\u00e9but des sympt\u00f4mes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-medium-font-size\" style=\"color:#26b4a9\"><strong><em>Facteurs de risque de la transmission du COVID<\/em><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Plusieurs <strong>facteurs de risque<\/strong> peuvent contribuer \u00e0 la <strong>propagation du COVID<\/strong>, parmi&nbsp;lesquels :<\/p>\n\n\n\n<ul style=\"background-color:#26b5a91c\" class=\"wp-block-list has-background\">\n<li>La <strong>distance par rapport \u00e0 une personne infect\u00e9e<\/strong> ;<\/li>\n\n\n\n<li>Le <strong>temps pass\u00e9 avec l&rsquo;individu infect\u00e9<\/strong> ;<\/li>\n\n\n\n<li>Le <strong>nombre de personnes infect\u00e9es dans une pi\u00e8ce<\/strong> ;<\/li>\n\n\n\n<li>L<strong>\u2019activit\u00e9<\/strong>, propice ou non \u00e0 la <strong>propagation des gouttelettes<\/strong> (par exemple, crier, chanter ou faire de l\u2019exercice) ;<\/li>\n\n\n\n<li>La <strong>dimension de l\u2019espace a\u00e9rien<\/strong> (espace ferm\u00e9 ou ouvert ; en int\u00e9rieur, le virus se propage plus facilement).<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-cover aligncenter is-light padding:20px;\" style=\"min-height:310px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" class=\"wp-block-cover__image-background wp-image-2861\" alt=\"\" src=\"https:\/\/feeli.io\/blog\/wp-content\/uploads\/2023\/06\/Design-sans-titre-1-2.png\" data-object-fit=\"cover\" srcset=\"https:\/\/feeli.io\/blog\/wp-content\/uploads\/2023\/06\/Design-sans-titre-1-2.png 500w, https:\/\/feeli.io\/blog\/wp-content\/uploads\/2023\/06\/Design-sans-titre-1-2-300x300.png 300w, https:\/\/feeli.io\/blog\/wp-content\/uploads\/2023\/06\/Design-sans-titre-1-2-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim wp-block-cover__gradient-background has-background-gradient\" style=\"background:linear-gradient(135deg,rgba(38,181,169,0.11) 0%,rgba(38,181,169,0.11) 100%)\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center wp-block-heading has-text-color wp-block-paragraph\" style=\"color:#26b4a9;font-size:28px\"><strong>Consultez un m\u00e9decin en ligne<\/strong> <\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:15px\">Besoin d\u2019un&nbsp;<strong>m\u00e9decin sans RDV&nbsp;<\/strong>? <br>Consultez rapidement en ligne. <br>Possibilit\u00e9 de recevoir un&nbsp;<strong>traitement<\/strong>&nbsp;adapt\u00e9 si n\u00e9cessaire. <br><em>Consultation&nbsp;par messagerie instantan\u00e9e<\/em>.<\/p>\n\n\n\n<div class=\"wp-block-group alignwide is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-20d0575b wp-block-group-is-layout-flex\">\n<div class=\"wp-block-buttons alignwide is-content-justification-center is-nowrap is-layout-flex wp-container-core-buttons-is-layout-5d0ac371 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100 is-style-outline is-style-outline--2\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/feeli.io\/symptome\/generaliste?utm_source=feeli-blog&amp;utm_channel=seo\" style=\"border-radius:100px;background:linear-gradient(135deg,rgb(42,170,224) 1%,rgb(182,227,212) 100%,rgb(41,216,193) 100%)\"><strong>Consulter d\u00e8s maintenant <\/strong>\ud83d\udcac<\/a><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-color\" style=\"color:#26b4a9;font-size:25px\"><strong><a id=\"6\">Combien de temps est-on positif au COVID ?<\/a><\/strong><\/h2>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Dans la plupart des cas, les <strong>sympt\u00f4mes disparaissent apr\u00e8s une semaine<\/strong>. Malgr\u00e9 tout, chez certaines personnes, la maladie peut \u00e9voluer vers une forme grave apr\u00e8s une semaine, dont un <strong>syndrome de d\u00e9tresse respiratoire aigu<\/strong>.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les<strong> sympt\u00f4mes persistants<\/strong> (essoufflement, malaise, toux, etc.) sont par ailleurs plus fr\u00e9quents en cas de maladie grave et peuvent durer plusieurs semaines, voire plusieurs mois (COVID-long).&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De m\u00eame, certains patients peuvent rester positifs aux tests PCR viraux &#8211; ind\u00e9pendamment des sympt\u00f4mes &#8211; pendant une p\u00e9riode d\u2019au moins 3 mois.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cela \u00e9tant, la <strong>maladie est rarement contagieuse apr\u00e8s 10 jours d\u2019infection<\/strong>, m\u00eame pour les patients dont les sympt\u00f4mes persistent. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les s\u00e9quelles \u00e0 long terme surviennent g\u00e9n\u00e9ralement apr\u00e8s une maladie grave.&nbsp;On estime que pr\u00e8s de <strong>25 \u00e0 50% des patients pourraient d\u00e9velopper un COVID long<\/strong>. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les <strong>sympt\u00f4mes fr\u00e9quent du COVID-long <\/strong>comprennent :&nbsp;<\/p>\n\n\n\n<ul style=\"background-color:#26b5a91c\" class=\"wp-block-list has-background\">\n<li>Une faiblesse ;<\/li>\n\n\n\n<li>Des douleurs musculaires (myalgies);<\/li>\n\n\n\n<li>Une fatigue ;<\/li>\n\n\n\n<li>Un essoufflement ;<\/li>\n\n\n\n<li>Ou encore des troubles cognitifs.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Le <strong>COVID long<\/strong> peut par ailleurs \u00eatre favoris\u00e9 par certains facteurs de risque, qui comprennent :&nbsp;<\/p>\n\n\n\n<ul style=\"background-color:#26b5a91c\" class=\"wp-block-list has-background\">\n<li>Le d\u00e9veloppement d\u2019une <strong>forme grave de la maladie<\/strong> ;<\/li>\n\n\n\n<li>L\u2019<strong>\u00e2ge avanc\u00e9<\/strong> ;<\/li>\n\n\n\n<li>Une <strong>maladie pulmonaire<\/strong> sous-jacente ;<\/li>\n\n\n\n<li>Le sexe f\u00e9minin.&nbsp;<\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-color\" style=\"color:#26b4a9;font-size:25px\"><strong><a id=\"7\">Quand faire un test COVID ?<\/a><\/strong><\/h2>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Il est n\u00e9cessaire de faire un <strong>d\u00e9pistage du COVID-19<\/strong> dans plusieurs cas de figure :<\/p>\n\n\n\n<ul style=\"background-color:#26b5a91c\" class=\"wp-block-list has-background\">\n<li>En cas de <strong>sympt\u00f4mes du COVID<\/strong> : il est recommand\u00e9 de respecter un isolement, avant de recevoir le r\u00e9sultat du test ;<\/li>\n\n\n\n<li>Lorsqu\u2019une personne est \u201ccas contact\u201d, c\u2019est-\u00e0-dire qu\u2019elle a \u00e9t\u00e9 <strong>expos\u00e9e \u00e0 une personne infect\u00e9e par le COVID<\/strong>. Un test de d\u00e9pistage peut \u00eatre r\u00e9alis\u00e9 environ 5 jours apr\u00e8s le dernier contact avec un malade ;<\/li>\n\n\n\n<li>En cas de n\u00e9cessit\u00e9 professionnelle (personnels soignants), \u00e0 l\u2019\u00e9cole ou dans les milieux ferm\u00e9s, en particulier lorsque la personne ne poss\u00e8de pas un <strong>sch\u00e9ma vaccinal complet<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Le <strong>test PCR<\/strong> (r\u00e9action en cha\u00eene polym\u00e9rase) est le test de d\u00e9pistage le plus fr\u00e9quemment r\u00e9alis\u00e9 par les professionnels de sant\u00e9. Il consiste \u00e0 :<\/p>\n\n\n\n<ul style=\"background-color:#26b5a91c\" class=\"wp-block-list has-background\">\n<li>Pr\u00e9lever un \u00e9chantillon des <strong>s\u00e9cr\u00e9tions nasales<\/strong> \u00e0 l\u2019aide d\u2019un \u00e9couvillon dans la gorge ou le nez.&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ensuite, le pr\u00e9l\u00e8vement est envoy\u00e9 dans un laboratoire, afin de d\u00e9tecter la <strong>pr\u00e9sence du virus<\/strong>. Le r\u00e9sultat est g\u00e9n\u00e9ralement disponible apr\u00e8s quelques jours (voir \u00e9galement, <a href=\"https:\/\/feeli.io\/blog\/test-negatif-covid\/\">test n\u00e9gatif COVID : comment interpr\u00e9ter le r\u00e9sultat<\/a>).&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les <strong>tests antig\u00e9niques<\/strong> sont un autre moyen de d\u00e9pistage. Bien que moins pr\u00e9cis que les tests PCR, les tests antig\u00e9niques permettent un <strong>r\u00e9sultat rapide <\/strong>(en 15 minutes).&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ils consistent \u00e0 pr\u00e9lever un \u00e9chantillon des s\u00e9cr\u00e9tions nasales \u00e0 l\u2019aide d\u2019un \u00e9couvillon dans le nez. Ils peuvent \u00eatre r\u00e9alis\u00e9s dans un \u00e9tablissement de soins de sant\u00e9, en pharmacie ou encore \u00e0 domicile.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-medium-font-size\" style=\"color:#26b4a9\"><strong><em>Comment savoir si on a eu le COVID ?<\/em><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Apr\u00e8s l\u2019infection par le COVID-19, l\u2019<strong>organisme produit des anticorps<\/strong> pour se d\u00e9fendre de la maladie et du virus. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La fabrication de ces anticorps peut prendre quelques semaines. Par cons\u00e9quent, une analyse sanguine n\u2019est d\u2019aucune utilit\u00e9 au d\u00e9but de la maladie.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En revanche, une analyse de sang peut permettre d&rsquo;identifier des anticorps sp\u00e9cifiques au virus du COVID, et donc aider \u00e0 d\u00e9terminer si l\u2019infection par le COVID a d\u00e9j\u00e0 eu lieu par le pass\u00e9.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c0 lire aussi : <a href=\"https:\/\/feeli.io\/blog\/courbatures-que-faire\/\">Courbatures : que faire<\/a><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-color\" style=\"color:#26b4a9;font-size:25px\"><strong><a id=\"9\">Comment pr\u00e9venir la contagiosit\u00e9 du COVID-19 ?<\/a><\/strong><\/h2>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">La meilleure <strong>pr\u00e9vention contre le COVID-19<\/strong> reste la vaccination, tout en restant \u00e0 jour sur les <strong>doses de rappels<\/strong>. S\u2019agissant des vaccins, quelques point essentiels sont \u00e0 retenir :<\/p>\n\n\n\n<ul style=\"background-color:#26b5a91c\" class=\"wp-block-list has-background\">\n<li>Les <strong>vaccins sont efficaces<\/strong> et respectent les<strong> normes de s\u00e9curit\u00e9<\/strong> ;<\/li>\n\n\n\n<li>Le vaccin contre le COVID ne peut pas \u00eatre la cause d\u2019une infection au COVID ;<\/li>\n\n\n\n<li>Une <strong>dose de rappel du vaccin<\/strong> peut \u00eatre n\u00e9cessaire, car son efficacit\u00e9 s\u2019estompe parfois avec le temps ;<\/li>\n\n\n\n<li>Comme tous les vaccins, celui contre le COVID-19 pr\u00e9sente des <strong>effets secondaires<\/strong>, principalement l\u00e9gers (courbatures, fi\u00e8vre, maux de t\u00eate, douleur au bras) pendant quelques jours ;<\/li>\n\n\n\n<li>Il est conseill\u00e9 de se faire vacciner m\u00eame si on a d\u00e9j\u00e0 eu le COVID-19.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">En plus de la vaccination, il est conseill\u00e9 d&rsquo;\u00e9viter toute exposition au virus, m\u00eame si cela n\u2019est pas toujours facile en raison des personnes asymptomatiques.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-medium-font-size\" style=\"color:#26b4a9\"><strong><em>Comment respecter les gestes barri\u00e8res ?<\/em><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Le <strong>port du masque<\/strong> est la principale mesure pr\u00e9ventive apr\u00e8s le vaccin. <strong>Il doit couvrir la bouche et le nez<\/strong> et doit \u00eatre port\u00e9 dans plusieurs situations :&nbsp;<\/p>\n\n\n\n<ul style=\"background-color:#26b5a91c\" class=\"wp-block-list has-background\">\n<li>Dans les <strong>lieux publics<\/strong>, particuli\u00e8rement <strong>en int\u00e9rieur<\/strong>, lorsque la <strong>densit\u00e9 de la population est \u00e9lev\u00e9e<\/strong> ;&nbsp;<\/li>\n\n\n\n<li>En pr\u00e9sence d\u2019un <strong>risque accru de maladie grave<\/strong> ;<\/li>\n\n\n\n<li><strong>Quand on est malade<\/strong> <strong>et en pr\u00e9sence d\u2019autres personnes<\/strong> ;<\/li>\n\n\n\n<li>Quand on est<strong> personnel soignant<\/strong> ;<\/li>\n\n\n\n<li>Et enfin dans les <strong>transports en commun<\/strong> (bus, trains, avions, etc.) ou les <strong>lieux d\u2019affluence<\/strong> (gares, a\u00e9roports).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">En plus de la vaccination et du port du masque, d\u2019autres <strong>gestes barri\u00e8res<\/strong> sont recommand\u00e9s :&nbsp;<\/p>\n\n\n\n<ul style=\"background-color:#26b5a91c\" class=\"wp-block-list has-background\">\n<li>En pr\u00e9sence de sympt\u00f4mes du COVID : <strong>faire un test de d\u00e9pistage<\/strong> ;<\/li>\n\n\n\n<li><strong>\u00c9viter les endroits surpeupl\u00e9s, mal ventil\u00e9s<\/strong> ou qui n\u2019ont pas d\u2019air frais venant de l\u2019ext\u00e9rieur ;<\/li>\n\n\n\n<li><strong>Maintenir une distanciation sociale<\/strong> d\u2019environ 2 m\u00e8tres avec les autres personnes, particuli\u00e8rement lorsqu\u2019on n\u2019est pas vaccin\u00e9 et personne \u00e0 risque ;<\/li>\n\n\n\n<li><strong>Se laver les mains<\/strong> <strong>le plus souvent possible<\/strong>, avec de l\u2019eau et du savon pendant au moins 30 secondes ;<\/li>\n\n\n\n<li><strong>Utiliser un d\u00e9sinfectant <\/strong>ou un<strong> gel hydroalcoolique<\/strong> pour les mains ;<\/li>\n\n\n\n<li>Dans la mesure du possible, <strong>\u00e9viter de se toucher les yeux, la bouche, les yeux ou le nez<\/strong> ;<\/li>\n\n\n\n<li><strong>Rester isol\u00e9 lorsqu\u2019on est malade<\/strong> ;<\/li>\n\n\n\n<li><strong>Ne pas tousser ou \u00e9ternuer dans sa main<\/strong> mais mais plut\u00f4t dans un mouchoir en papier, qu\u2019il faut ensuite <strong>jeter \u00e0 la poubelle <\/strong>;<\/li>\n\n\n\n<li><strong>D\u00e9sinfecter ou nettoyer fr\u00e9quemment les surfaces ou les objets touch\u00e9s<\/strong>, \u00e0 l\u2019aide de lingettes d\u00e9sinfectantes ou d\u2019un nettoyant m\u00e9nager en spray ;<\/li>\n\n\n\n<li><strong>Surveiller ses sympt\u00f4mes <\/strong>et faire attention \u00e0 sa sant\u00e9.&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u2019h\u00e9sitez pas \u00e0 vous rapprocher d\u2019un <a href=\"https:\/\/feeli.io\/symptome\/generaliste\">m\u00e9decin g\u00e9n\u00e9raliste<\/a> pour davantage d\u2019informations. Une <a href=\"https:\/\/feeli.io\/symptome\/consultation-en-ligne\">consultation en ligne<\/a> pr\u00e9sente l\u2019int\u00e9r\u00eat d\u2019une prise en charge rapide, sans RDV. Prenez soin de votre sant\u00e9 !&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour aller plus loin : <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/feeli.io\/blog\/hantavirus\/\">Hantavirus : sympt\u00f4mes, transmission et traitement<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/feeli.io\/blog\/grippe-k\/\">Grippe K (H3N2)<\/a><\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-cover aligncenter is-light padding:20px;\" style=\"min-height:310px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" class=\"wp-block-cover__image-background wp-image-2861\" alt=\"\" src=\"https:\/\/feeli.io\/blog\/wp-content\/uploads\/2023\/06\/Design-sans-titre-1-2.png\" data-object-fit=\"cover\" srcset=\"https:\/\/feeli.io\/blog\/wp-content\/uploads\/2023\/06\/Design-sans-titre-1-2.png 500w, https:\/\/feeli.io\/blog\/wp-content\/uploads\/2023\/06\/Design-sans-titre-1-2-300x300.png 300w, https:\/\/feeli.io\/blog\/wp-content\/uploads\/2023\/06\/Design-sans-titre-1-2-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim wp-block-cover__gradient-background has-background-gradient\" style=\"background:linear-gradient(135deg,rgba(38,181,169,0.11) 0%,rgba(38,181,169,0.11) 100%)\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center wp-block-heading has-text-color wp-block-paragraph\" style=\"color:#26b4a9;font-size:28px\"><strong>Consultez un m\u00e9decin en ligne<\/strong> <\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:15px\">Besoin d\u2019un&nbsp;<strong>m\u00e9decin sans RDV&nbsp;<\/strong>? <br>Consultez rapidement en ligne. <br>Possibilit\u00e9 de recevoir un&nbsp;<strong>traitement<\/strong>&nbsp;adapt\u00e9 si n\u00e9cessaire. <br><em>Consultation&nbsp;par messagerie instantan\u00e9e<\/em>.<\/p>\n\n\n\n<div class=\"wp-block-group alignwide is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-20d0575b wp-block-group-is-layout-flex\">\n<div class=\"wp-block-buttons alignwide is-content-justification-center is-nowrap is-layout-flex wp-container-core-buttons-is-layout-5d0ac371 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100 is-style-outline is-style-outline--3\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/feeli.io\/symptome\/generaliste?utm_source=feeli-blog&amp;utm_channel=seo\" style=\"border-radius:100px;background:linear-gradient(135deg,rgb(42,170,224) 1%,rgb(182,227,212) 100%,rgb(41,216,193) 100%)\"><strong>Consulter d\u00e8s maintenant <\/strong>\ud83d\udcac<\/a><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>La contagiosit\u00e9 du COVID-19 ne cesse d\u2019\u00e9voluer, en raison des modifications que subit la souche du virus d\u2019une ann\u00e9e \u00e0 l\u2019autre.&nbsp; Il n\u2019est d\u2019ailleurs pas le seul virus \u00e0 muter, puisque le vaccin de la grippe doit \u00eatre r\u00e9vis\u00e9 d\u2019une ann\u00e9e \u00e0 l\u2019autre en fonction des pr\u00e9visions \u00e9pid\u00e9miologiques. La pr\u00e9vention de cette maladie respiratoire aigu\u00eb&#8230;<a class=\"btnReadMore\" href=\"https:\/\/feeli.io\/blog\/contagiosite-covid-19-duree\/\">En savoir plus<i class=\"fa fa-long-arrow-right\"><\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":933,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[7],"tags":[],"class_list":["post-1575","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sante-generale"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Contagiosit\u00e9 COVID-19 : omicron, dur\u00e9e, efficacit\u00e9 des vaccins<\/title>\n<meta name=\"description\" content=\"Combien de temps dure la contagiosit\u00e9 du COVID-19 ? Les vaccins sont-ils vraiment efficaces ? 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