{"id":84657,"date":"2025-07-31T00:20:08","date_gmt":"2025-07-30T22:20:08","guid":{"rendered":"https:\/\/www.infokuryr.cz\/n\/?p=84657"},"modified":"2025-07-30T13:01:09","modified_gmt":"2025-07-30T11:01:09","slug":"nova-vyzkumna-prace-shrnuje-celosvetove-studie-ochrana-nedostatecna-posilujici-davka-ucinna-pouze-kratkodobe","status":"publish","type":"post","link":"https:\/\/www.infokuryr.cz\/n\/2025\/07\/31\/nova-vyzkumna-prace-shrnuje-celosvetove-studie-ochrana-nedostatecna-posilujici-davka-ucinna-pouze-kratkodobe\/","title":{"rendered":"Nov\u00e1 v\u00fdzkumn\u00e1 pr\u00e1ce shrnuje celosv\u011btov\u00e9 studie \u2013 ochrana nedostate\u010dn\u00e1, posiluj\u00edc\u00ed d\u00e1vka \u00fa\u010dinn\u00e1 pouze kr\u00e1tkodob\u011b"},"content":{"rendered":"
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Dne 16. dubna 2025 publikovali v\u011bdci z Americk\u00e9 univerzity v Bejr\u00fatu\u00a0komplexn\u00ed v\u011bdeck\u00fd p\u0159ehled s n\u00e1zvem\u00a0\u201e\u00a0<\/em>V\u00fdzvy \u00fa\u010dinnosti a imunogenicity vakc\u00edn proti COVID-19: Narativn\u00ed p\u0159ehled se systematick\u00fdm p\u0159\u00edstupem<\/a><\/em><\/span>\u00a0\u201c\u00a0<\/span><\/em>(<\/em>\u00a0DOI: 10.3390\/vaccines13080789) v \u010dasopise Vaccines (MDPI). Tento p\u0159ehled nen\u00ed samostatnou klinickou studi\u00ed, ale sp\u00ed\u0161e systematick\u00fdm\u00a0shrnut\u00edm a kritick\u00fdm hodnocen\u00edm \u010detn\u00fdch mezin\u00e1rodn\u00edch studi\u00ed<\/strong>\u00a0o \u00fa\u010dinnosti a imunitn\u00ed odpov\u011bdi vakc\u00edn proti COVID-19 \u2013 jakousi \u201e\u00a0studi\u00ed v\u0161ech studi\u00ed<\/a>\u00a0\u201c. Auto\u0159i prohla\u0161uj\u00ed, \u017ee neobdr\u017eeli \u017e\u00e1dnou finan\u010dn\u00ed podporu a \u017ee vylu\u010duj\u00ed jak\u00fdkoli st\u0159et z\u00e1jm\u016f. V\u00fdsledky t\u00e9to studie vrhaj\u00ed st\u0159\u00edzliv\u00e9 sv\u011btlo na skute\u010dn\u00fd ochrann\u00fd \u00fa\u010dinek vakc\u00edn \u2013 zejm\u00e9na s ohledem na dobu trv\u00e1n\u00ed, \u00fa\u010dinnost posilovac\u00ed d\u00e1vky a varianty viru.<\/span><\/p>\n

Ochrana rychle kles\u00e1 \u2013 a to i proti z\u00e1va\u017en\u00fdm p\u0159\u00edpad\u016fm<\/span><\/h3>\n

Kl\u00ed\u010dov\u00e9 zji\u0161t\u011bn\u00ed: V sou\u010dasn\u00e9 dob\u011b pou\u017e\u00edvan\u00e9 vakc\u00edny proti COVID-19 nab\u00edzej\u00ed\u00a0<\/span>pouze omezenou a kr\u00e1tkodobou ochranu<\/span><\/strong>\u00a0. Studie ukazuj\u00ed, \u017ee hladiny protil\u00e1tek v\u00fdrazn\u011b klesaj\u00ed ji\u017e po n\u011bkolika m\u011bs\u00edc\u00edch. Zat\u00edmco ochrana proti z\u00e1va\u017en\u00fdm p\u0159\u00edpad\u016fm se zpo\u010d\u00e1tku jev\u00ed jako siln\u011bj\u0161\u00ed, i tato ochrana se \u010dasem m\u011b\u0159iteln\u011b sni\u017euje.<\/span><\/p>\n

N\u011bkolik analyzovan\u00fdch studi\u00ed ukazuje, \u017ee tzv. \u201epr\u016flomov\u00e9 infekce\u201c (infekce navzdory o\u010dkov\u00e1n\u00ed) jsou nyn\u00ed normou, nikoli v\u00fdjimkou. Vakc\u00edny nejen ztr\u00e1cej\u00ed sv\u016fj preventivn\u00ed \u00fa\u010dinek proti infekci, ale tak\u00e9 vykazuj\u00ed omezen\u00ed v ochran\u011b p\u0159ed hospitalizac\u00ed \u2013 v z\u00e1vislosti na v\u011bku, imunitn\u00edm stavu a variant\u011b viru.<\/span><\/strong><\/p>\n

Boostery zvy\u0161uj\u00ed hladinu protil\u00e1tek pouze kr\u00e1tkodob\u011b.<\/span><\/h3>\n

Auto\u0159i tak\u00e9 analyzuj\u00ed p\u0159\u00ednosy posiluj\u00edc\u00edch o\u010dkov\u00e1n\u00ed. Jejich z\u00e1v\u011br: \u00da\u010dinek je\u00a0<\/span>\u010dasov\u011b velmi omezen\u00fd<\/span><\/strong>\u00a0. Imunitn\u00ed ochrana v\u00fdznamn\u011b kles\u00e1 ji\u017e n\u011bkolik t\u00fddn\u016f po pod\u00e1n\u00ed. Modelov\u00e9 v\u00fdpo\u010dty nazna\u010duj\u00ed, \u017ee udr\u017een\u00ed \u00fa\u010dinn\u00e9 ochrany by vy\u017eadovalo\u00a0<\/span>t\u0159i nebo v\u00edce posiluj\u00edc\u00edch o\u010dkov\u00e1n\u00ed ro\u010dn\u011b<\/span><\/strong>\u00a0\u2013 p\u0159\u00edstup, kter\u00fd se nezd\u00e1 b\u00fdt ani praktick\u00fd, ani spole\u010densky provediteln\u00fd.<\/span><\/p>\n

D\u00e1le se zd\u016fraz\u0148uj\u00ed imunologick\u00e9 \u00fa\u010dinky: opakovan\u00e9 o\u010dkov\u00e1n\u00ed by v ur\u010dit\u00fdch p\u0159\u00edpadech mohlo v\u00e9st k imunitn\u00ed \u00fanav\u011b nebo oslaben\u00ed imunitn\u00ed reakce \u2013 riziko, kter\u00e9 bylo dosud m\u00e1lo prozkoum\u00e1no, ale v literatu\u0159e se o n\u011bm diskutuje.<\/span><\/p>\n

Varianty viru sni\u017euj\u00ed \u00fa\u010dinnost vakc\u00edny<\/span><\/h3>\n

Obzvl\u00e1\u0161t\u011b d\u016fle\u017eit\u00fdm aspektem studie je anal\u00fdza tzv.\u00a0<\/span>imunitn\u00edho \u00faniku<\/span><\/strong>\u00a0: Nov\u00e9 varianty viru \u2013 zejm\u00e9na podtypy omikronu \u2013 jsou st\u00e1le v\u00edce schopny uniknout imunitn\u00ed obran\u011b generovan\u00e9 o\u010dkov\u00e1n\u00edm. Ochrann\u00fd \u00fa\u010dinek proti infekci je u n\u011bkter\u00fdch variant prakticky nulov\u00fd.<\/span><\/p>\n

Auto\u0159i zd\u016fraz\u0148uj\u00ed, \u017ee sou\u010dasn\u00e1 architektura vakc\u00edny (v\u011bt\u0161inou zam\u011b\u0159en\u00e1 na p\u016fvodn\u00ed spike protein SARS-CoV-2)\u00a0<\/span>ji\u017e neodr\u00e1\u017e\u00ed cirkuluj\u00edc\u00ed virovou krajinu<\/span><\/strong>\u00a0. Adaptace \u010dasto nast\u00e1v\u00e1 p\u0159\u00edli\u0161 pozd\u011b nebo z\u016fst\u00e1v\u00e1 nedostate\u010dn\u00e1.<\/span><\/p>\n

Nedostatek slizni\u010dn\u00ed a T-bun\u011b\u010dn\u00e9 imunity<\/span><\/h3>\n

Krom\u011b protil\u00e1tek jsou pro dlouhodobou ochranu kl\u00ed\u010dov\u00e9 tak\u00e9\u00a0<\/span>T-bun\u011b\u010dn\u00e9 reakce a slizni\u010dn\u00ed imunita<\/span><\/strong>\u00a0(nap\u0159. v nosohltanu). Dosud pou\u017e\u00edvan\u00e9 vakc\u00edny \u2013 zejm\u00e9na mRNA a vektorov\u00e9 vakc\u00edny \u2013 v tomto ohledu nefunguj\u00ed dob\u0159e. Studie ukazuj\u00ed, \u017ee imunitn\u00ed reakce je prim\u00e1rn\u011b syst\u00e9mov\u00e1, nikoli lok\u00e1ln\u00ed ve sliznic\u00edch \u2013 co\u017e vysv\u011btluje nedostate\u010dnou prevenci p\u0159enosu.<\/span><\/p>\n

Auto\u0159i vyz\u00fdvaj\u00ed k intenzivn\u011bj\u0161\u00edmu v\u00fdzkumu alternativn\u00edch platforem, jako jsou\u00a0<\/span>nosn\u00ed vakc\u00edny<\/span><\/strong>\u00a0, nov\u00e9 antigenn\u00ed c\u00edle nebo kombinovan\u00e9 technologie, kter\u00e9 by mohly umo\u017enit stabiln\u011bj\u0161\u00ed, \u0161iroce zalo\u017een\u00e9 a dlouhodob\u011bj\u0161\u00ed imunitu.<\/span><\/p>\n

Kritick\u00fd z\u00e1v\u011br: o\u010dkovac\u00ed kampan\u011b s omezen\u00fdm \u00fa\u010dinkem<\/span><\/h3>\n

Studie dosp\u00edv\u00e1 k jasn\u00e9mu, by\u0165 st\u0159\u00edzliv\u00e9mu z\u00e1v\u011bru:\u00a0<\/span>Vakc\u00edny proti COVID-19, kter\u00e9 se v sou\u010dasnosti pou\u017e\u00edvaj\u00ed, nejsou dostate\u010dn\u00e9 k zaji\u0161t\u011bn\u00ed trval\u00e9 kontroly pandemie<\/span><\/strong>\u00a0. Jejich \u00fa\u010dinnost je do\u010dasn\u00e1, n\u00e1chyln\u00e1 k variant\u00e1m a imunologicky ne\u00fapln\u00e1. Posilovac\u00ed kampan\u011b nejsou \u017eivotaschopnou dlouhodobou strategi\u00ed.<\/span><\/p>\n

Vzhledem k t\u011bmto d\u016fkaz\u016fm se opat\u0159en\u00ed zdravotn\u00ed politiky, kter\u00e1 se i nad\u00e1le spol\u00e9haj\u00ed na plo\u0161n\u00e9 o\u010dkov\u00e1n\u00ed a pravideln\u00e9 posilovac\u00ed d\u00e1vky, jev\u00ed jako\u00a0<\/span>v\u011bdecky sporn\u00e1 a strategicky neudr\u017eiteln\u00e1<\/span><\/strong>\u00a0. Auto\u0159i se nestav\u00ed proti o\u010dkov\u00e1n\u00ed jako takov\u00e9mu, ale sp\u00ed\u0161e se zasazuj\u00ed o \u00faplnou zm\u011bnu o\u010dkovac\u00ed strategie \u2013 a to jak z l\u00e9ka\u0159sk\u00e9ho, tak i soci\u00e1ln\u00edho hlediska.<\/span><\/p>\n

Pr\u00e1ce tak nab\u00edz\u00ed fundovan\u00fd, systematicky rozpracovan\u00fd p\u0159ehled sou\u010dasn\u00e9ho stavu v\u011bdy \u2013 a poskytuje \u010detn\u00e9 argumenty pro kritick\u00e9 p\u0159ehodnocen\u00ed politick\u00fdch a farmaceutick\u00fdch opat\u0159en\u00ed posledn\u00edch let.<\/span><\/p>\n<\/div>\n<\/div>\n

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Zdroj<\/span><\/a><\/span><\/h3>\n

 <\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Dne 16. dubna 2025 publikovali v\u011bdci z Americk\u00e9 univerzity v Bejr\u00fatu\u00a0komplexn\u00ed v\u011bdeck\u00fd p\u0159ehled s n\u00e1zvem\u00a0\u201e\u00a0V\u00fdzvy…<\/p>\n","protected":false},"author":2,"featured_media":70131,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[839,651,1561],"_links":{"self":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/84657"}],"collection":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/comments?post=84657"}],"version-history":[{"count":0,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/84657\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media\/70131"}],"wp:attachment":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media?parent=84657"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/categories?post=84657"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/tags?post=84657"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}