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 hutachiona hwehutachiona. 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 kutiza kugona.
Mhedzisiro yekutevedzana kwemajini yakaratidza kuti ORF1a yeXE yaive yakawanda kubva kuOmicron's BA.1, nepo yasara inobva kuOmicron's BA.2, kunyanya magene eS protein part - zvinoreva kuti maitiro ayo ekutapurirana 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.
Zvinyorwa zvekare zvakaratidza kuti kukura kwe XE kwakakwirira kudarika BA.2 yakawedzera ne10%, asi gare gare data yakaratidza kuti chiyero ichi hachina kugadzikana. Parizvino, hazvigone kutariswa kuti chiyero chekukura kwepamusoro ndiyo mukana wakaunzwa nekugadzirisa.
Zvinogara zvichitendwa kuti misiyano mikuru inotevera inogona kuva inotapukira kupfuura yezvino BA.2 ine zvimwe zvakanakira, uye zvakaoma kunyatsofanotaura 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 simba rekudzivirira 2. Panyaya yekudzivirira kwemaitiro (madhasi maviri), chiyero chinoshanda chemishonga miviri inoshandiswa muHong Kong yekudzivirira hutachiona yakaderedzwa zvikuru, asi ichiri nesimba rakasimba pakudzivirira kurwara kwakanyanya uye rufu. Mushure mekudzivirira kwechitatu, dziviriro yakagadziridzwa zvakanyanya.
Nguva yekutumira: Kubvumbi-14-2022