Mhedzisiro yacho yakanaka kune vanogadzira antigen bvunzo, avo vaona kudonha kudonha mushure mekunge vaccine yatangwa.
Ongororo diki yakapihwa mari neNational Institutes of Health (NIS) yakaona kuti Covid-19 lateral flow test (LFT) inoshanda seye polymerase chain reaction (PCR) bvunzo mukuona hutachiona hweSARS-CoV-2.Inoitwa mazuva matatu oga oga One screening.
PCR bvunzo dzinoonekwa seyegoridhe chiyero chekuongorora hutachiona hweCovid-19, asi kushandiswa kwavo kwakapararira sematurusi ekuvheneka kune mashoma nekuti anofanirwa kugadziriswa murabhoritari uye mhedzisiro yacho inogona kutora mazuva akati wandei kusvika kuvarwere.
Kusiyana neizvi, LFT inogona kupa mhinduro mukati memaminitsi gumi nemashanu, uye vashandisi havatombodi kubva pamba.
Vatsvagiri vane hukama neNIH Diagnostic Rapid Acceleration Programme vakataura mhedzisiro yevanhu makumi mana nevatatu vakatapukirwa neCovid-43.Vatori vechikamu vaibva kuYunivhesiti yeIllinois kuUrbana-Champaign (UIUC) SHIELD Illinois Covid-19 chirongwa chekuongorora.Ivo vakazviedza ivo pachavo kana kuti vaive pedyo nevanhu vakaonekwa vaine hutachiona.
Vatori vechikamu vakagamuchirwa mukati memazuva mashoma ekusangana nehutachiona, uye mhinduro dzebvunzo dzaive dzisina kunaka mukati memazuva manomwe vasati vanyoreswa.
Vese vakapa sampuli dzemate uye mafomu maviri emhino dzemumhino kwemazuva gumi nemana akateedzana, izvo zvakazogadziriswa nePCR, LFT, uye rarama hutachiona tsika.
Hutachiona tsika ibasa rakawanda uye rinodhura-maitiro risingashandiswe mukuyedzwa kweCovid-19, asi rinobatsira kuona zvakanyanya chimiro chehutachiona kubva mumuenzaniso.Izvi zvinogona kubatsira vaongorori kufungidzira kutanga uye nguva yehutachiona hweCovid-19.
Christopher Brooke, Purofesa weMolecular and Cell Biology kuUIUC, akati: “Kuongororwa kwakawanda kunoona zvinhu zvine chekuita neutachiona, asi izvi hazvireve kuti kune utachiona huripo.Nzira chete yekuona kuti kune hutachiona hwehupenyu, hunotapukira kuita kutsunga kweInfectivity kana tsika. ”
Zvadaro, vatsvakurudzi vakafananidza nzira nhatu dzekuona hutachiona hweCovid-19-PCR yekuona mate, PCR yekuona sampuli dzemhino, uye nekukurumidza Covid-19 antigen kuonekwa kwemasamples emhino.
Mhedzisiro yesample yemate inoitwa neyakatenderwa PCR bvunzo yakavakirwa pamate akagadzirwa neUIUC, inonzi covidSHIELD, inogona kuburitsa mhedzisiro mushure memaawa angangoita gumi nemaviri.Iyo yakaparadzana PCR bvunzo uchishandisa Abbott Alinity mudziyo unoshandiswa kuwana mhinduro kubva kumhino swabs.
Rapid antigen kuonekwa kwakaitwa pachishandiswa Quidel Sofia SARS antigen fluorescence immunoassay, LFT, iyo inobvumirwa kutarisirwa nekukasika uye inogona kuburitsa mhinduro mushure memaminitsi gumi nemashanu.
Zvadaro, vaongorori vakaverenga kunzwisiswa kwenzira yega yega mukuona SARS-CoV-2, uye vakayerawo kuvepo kwehutachiona hwehupenyu mukati memavhiki maviri ekutanga kutapukirwa.
Vakaona kuti kuongororwa kwePCR kunonyanya kunzwisiswa pane kukurumidza kuyedza Covid-19 antigen pakuongororwa hutachiona nguva yehutachiona isati yatanga, asi vakaratidza kuti PCR mhedzisiro inogona kutora mazuva akati wandei kuti idzoserwe kumunhu ari kuongororwa.
Vatsvagiri vakaverenga kunzwisiswa kwebvunzo zvichienderana nekuwanda kwebvunzo uye vakawana kuti sensitivity yekuona hutachiona yakakwira kupfuura 98% kana bvunzo ichiitwa mazuva matatu ega ega, kungave kuri kukurumidza Covid-19 antigen bvunzo kana PCR bvunzo.
Pavakaongorora kuwanda kwekuona kamwe pasvondo, kunzwisiswa kwePCR yekuona mhino nemate kwainge kuchiri kwakakwira, ingangoita 98%, asi kunzwa kwekuonekwa kweantigen kwakadzikira kusvika pa80%.
Mhedzisiro yacho inoratidza kuti kushandisa iyo yekukurumidza Covid-19 antigen bvunzo kanokwana kaviri pasvondo yeCovid-19 bvunzo ine mashandiro akafanana nePCR bvunzo uye inowedzera mukana wekuona munhu ane hutachiona mumatanho ekutanga echirwere.
Mhedzisiro iyi ichagamuchirwa nevanomhanyisa antigen bvunzo vanogadzira, avo nguva pfupi yadarika vakashuma kuti kudiwa kwekuongororwa kweCovid-19 kwadzikira nekuda kwekuunzwa kwejekiseni.
Zvese zviri zviviri kutengeswa kweBD neQuidel mumari ichangoburwa zvaive zvakaderera pane zvaitarisirwa nevanoongorora, uye mushure mekudiwa kwekuongororwa kweCovid-19 kwakaderera zvakanyanya, Abbott yakadzikisa maonero ayo 2021.
Munguva yedenda, varapi vanopokana pamusoro pekushanda kweLFT, kunyanya kune zvirongwa zvakakura zvekuyedza, sezvo vachiwanzoita zvisizvo mukuona hutachiona hweasymptomatic.
Ongororo yakaburitswa neUS Centers for Disease Control and Prevention muna Ndira yakaratidza kuti Abbott kukurumidza bvunzo BinaxNOW inogona kupotsa ingangoita zvikamu zviviri muzvitatu zveasymptomatic zvirwere.
Panguva imwecheteyo, iyo Innova bvunzo yakashandiswa kuUK yakaratidza kuti kunzwisiswa kwezviratidzo zveCovid-19 varwere kwaingova makumi mashanu nesere muzana, nepo diki data remutyairi rairatidza kuti asymptomatic senitivity yaingova makumi mana muzana.
Nguva yekutumira: Jul-05-2021