XE yakatanga kuwanikwa muUK muna Kukadzi 15 gore rino.
Pamberi peXE, tinoda kudzidza imwe ruzivo rwekutanga nezveCOVID-19.Chimiro cheCOVID-19 chiri nyore, kureva, nucleic acids pamwe neprotein shell kunze.COVID-19 protein yakakamurwa kuita zvikamu zviviri: chimiro cheprotein uye chisiri chechimiro cheprotein (NSP).Maprotein eStructural ndiwo mana emhando dzespike protein S, hamvuropu protein E, membrane protein M uye nucleocapsid protein N. Ndiwo mapuroteni anodiwa kuti aumbe twuutachiona.Kune asiri mapuroteni echimiro, kune anopfuura gumi nemaviri.Iwo mapuroteni akavharidzirwa nehutachiona genome uye ane mamwe mabasa mukuita kwehutachiona kudzokororwa, asi usasungirire kune hutachiona zvidimbu.
Imwe yeakanyanya kukosha ekutevedzana kweiyo nucleic acid yekuona (RT-PCR) ndiyo inochengetedza ORF1 a/b dunhu reCOVID-19.Shanduko dzezvakasiyana zvakasiyana hazvikanganisi nucleic acid kuonekwa.
Sehutachiona hweRNA, COVID-19 inowanzoita shanduko, asi mazhinji ekuchinja haana zvazvinoreva.Vashoma vavo vachava nemigumisiro yakaipa.Chete shanduko shoma dzinogona kuwedzera kutapukira, pathogenic kana immune immune kupukunyuka.
Migumisiro yekutevedzana kwemajini yakaratidza kuti ORF1a yeXE yakanga yakawanda kubva kuOmicron's BA.1, asi imwe yose inobva kuOmicron's BA.2, kunyanya majeni eS protein chikamu - zvinoreva kuti maitiro ayo ekufambisa anogona kunge ari pedyo neBA.2 .
BA.2 ndiyo hutachiona hunonyanya kutapukira hunowanikwa mumakore achangopfuura.Kune endo native infectivity yehutachiona, isu tinowanzo kutarisa R0, kureva kuti, munhu ane hutachiona anogona kutapurira vanhu vakati wandei pasina kusadzivirirwa uye kudzivirira.Iyo yakakwirira iyo R0, yakakura iyo infectivity.
Nhoroondo dzepakutanga dzakaratidza kuti kukura kwe XE kwakakwirira kudarika kweBA.2 yakawedzera ne10%, asi gare gare data yakaratidza kuti chiyero ichi hachina kugadzikana.Parizvino, hazvigone kutariswa kuti chiyero chekukura kwepamusoro ndiyo mukana unounzwa nekugadzirisa.
Zvinogara zvichitendwa kuti misiyano mikuru inotevera inogona kutapukira kupfuura ikozvino BA.2 ine zvimwe zvakanakira, uye zvakaoma kufanotaura nemazvo kuti huturu hwayo huchachinja sei (kuwedzera kana kuderera).Parizvino, nhamba yeiyi misiyano mitsva haina kuwanda.Hazvibviri kuita mhedziso kana chero ipi zvayo inogona kukura kuva misiyano mikuru.Inoda kumwe kunyatsotariswa.Kune vanhuwo zvavo, hapana chikonzero chekuvhunduka panguva ino.Takatarisana neizvi BA.2 kana kuti zvimwe recombinant siyana, kubaiwa kuchiri kunetsa.
Pamberi peBA ine simba rakasimba rekudzivirira zvirwere 2. Panyaya yekudzivirira kwemaitiro (mapiritsi maviri), chiyero chinoshanda chemishonga miviri inoshandiswa muHong Kong yekudzivirira utachiona yakaderedzwa zvikuru, asi ichine simba rakasimba. mhedzisiro pakudzivirira kurwara kwakanyanya uye rufu.Mushure mekudzivirira kwechitatu, dziviriro yakagadziridzwa zvakanyanya.
Nguva yekutumira: Kubvumbi-14-2022