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Breakthrough zvirwere uye boosters

Nhau dzakanaka ndedzekuti dhamu rakazara rezvino bvumidzwa COVID-19 vaccine rinoramba richishanda. "Majekiseni ese anoshanda nemazvo," akadaro Jeff Kwong, chiremba wezvirwere zvinotapukira paYunivhesiti yeToronto. "Uye majekiseni aidzivirira zvakanyanya kubva kumhedzisiro yakakomba kana ichienzaniswa nehutachiona," Kwong aratidza muongororo, isati yaongororwa nevezera, kushanda kwePfizer, Moderna, uye AstraZeneca vaccine kurwisa hutachiona hwezviratidzo, kuchipatara, kana kufa pakati paZvita 2020 naMay 2021.

Zvidzidzo zvakawanda zvakaratidza kuti vaccine yeModerna nePfizer ichiri kudzivirira kubva kuDelta, asi kwete pamwe nekusiyana kwakapfuura. Vanhu vasina kubayiwa vanogadzira zvinopfuura makumi mapfumbamwe muzana ematare matsva akasimbiswa pakati pematunhu anoteedzera data rekesi pamwe nemamiriro ekudzivirira.

"[Majekiseni] anoderedza njodzi yekubuda muchipatara zvakanyanya," anodaro Aziz Sheikh, nyanzvi yezvekurapa paYunivhesiti yeEdinburgh, Scotland, UK uyo airatidza kuti Delta yakakonzeresa zvakapetwa kaviri kuchipatara kupfuura musiyano weAlpha, izvo zvakakonzera kurwara kwakanyanya kupfuura yekutanga SARS-CoV-2. "Pakazere, vari kushanda."Silicone Dhora DzeBonde

CDC inofungidzira kuti kubaya kweCCIDID-19 kunoderedza njodzi yekutapukirwa neSARS-CoV-2 nekasere uye njodzi yekurwara, kuiswa muchipatara, kana kufa makumi maviri neshanu.

Asi kuyedzwa kusina kukwana munyika yose kunoita kuti zvisakwanise kuziva chokwadi chekupararira kweDelta nezvimwe zvakasiyana. Kana paine kutapurirana kwakanyanya kweDelta munharaunda, kunyangwe vanhu vakabaiwa zvizere vari panjodzi yekudaidzwa kuti "vaccine yekupinda hutachiona," iyo CDC inotsanangura sepaya genetic zvinhu kana protein kubva kuSARS-CoV-2 inoonekwa mumhino swab kupfuura mazuva gumi nemana mushure mekunge munhu agamuchira yakakurudzirwa dosi yeFDA-yakatenderwa COVID-19 yekudzivirira COVID-19.

Madhasi maviri eAstraZeneca nePfizer vaccine anofungidzirwa kuve makumi matanhatu uye makumi masere nemasere muzana anoshanda, zvichiteerana, kurwisa chirwere chechiratidzo chinokonzerwa neDelta. Ruzhinji rwemishonga yekudzivirira inopihwa muUS (Moderna nePfizer) inoda mapfuti maviri ekudzivirira zvakanyanya. Majekiseni aya haanyanyi kushanda paDelta mushure mekurohwa kamwe chete, anodaro Olivier Schwartz, mukuru weVirus and Immunity Unit kuInstitut Pasteur, Paris, uyo akatungamira ongororo yakaratidza kuti domo rimwe chete rekudzivirira kweAstraZeneca nePfizer kana hutachiona hwekare hahuna kumisa mutsauko weDelta.

Kukurudzirwa nedhata pamusoro pekudzikiswa kwekuita kunopesana nemhando nyowani dzakaita seDelta, Pfizer iri kutsvaga mvumo yekuwedzera dosi yekudzivirira kwayo. Moderna iri kuyedzawo yakagadziridzwa mRNA vaccine booster dose. Iyo US Food and Drug Administration (FDA) inotarisirwa kupedzisa chirongwa cheCCIDID-19 chekudzivirira chekuwedzera munguva pfupi.