Coronavirus - UK: Ubwongereza bwamaze gutanga 'commandes' miliyoni 100 y'urwo rukingo
Urukingo rwa coronavirus rwakozwe na Kaminuza ya Oxford yo mu Bwongereza rugaragaza ko nta kibazo ruteza kandi rukangura ubwirinzi bw'umubiri bukirwanaho.
Amagerageza yarwo yakorewe ku bantu 1,077. Yagaragaje ko kuruterwa byatumye biremamo ubwirinzi (antibodies) n'uturemangingo rwa 'T-cells' dushobora kurwanya coronavirus. Ibyagezweho n'ubu bushakashatsi biratanga icyizere cyinshi, ariko haracyari kare cyane kumenya niba ibi bihagije ngo bitange ubwirinzi bw'iyi virusi. Ubu hari gukorwa andi magerageza akorewe ku bantu benshi kurushaho. Leta y'Ubwongereza yamaze gutanga 'commandes' z'uducupa miliyoni 100 tw'urwo rukingo. Uru rukingo rukora gute? Uru rukingo - rwitwa ChAdOx1 nCoV-19 - ruri gukorwa ku muvuduko mwinshi cyane ku kigero kitari cyarigeze kibaho mbere. Rukozwe muri virusi yakorewe muri ' laboratoire' itera ibicurane mu nguge. Rwarahindaguwe cyane, mbere na mbere kugira ngo rudateza ubwandu mu bantu, ariko nanone no kugira ngo "ruse" na coronavirus. Abahanga muri siyansi bakoze ibi bimurira bimwe mu bigize coronavirus bizwi nka 'spike protein' - iki kikaba ari igikoresho cy'ingenzi ikoresha mu kugaba igitero ku turemangingo twacu - mu rukingo barimo gukora. Ibi bivuze ko uru rukingo rusa na coronavirus nyirizina, noneho ubwirinzi bw'umubiri bukitoza uburyo bwo kuyihashya. Prof Andrew Pollard, wo mu itsinda ry'ubushakashatsi ryo kuri Kaminuza ya Oxford, yabwiye BBC ati: "Twishimiye cyane ibyagezweho byatangajwe uyu munsi [ku wa mbere]..." "Ariko ikibazo cy'ingenzi buri muntu ashaka kumenya ni ukumenya niba uru rukingo rukora, rutanga ubwirinzi...turacyategereje kubimenya". Ubu bushakashatsi bwagaragaje ko 90% by'ababukoreweho bahise bagira ubwirinzi kuri coronavirus bamaze guhabwa urwo rukingo inshuro imwe ('dose' imwe). Abantu 10 gusa ni bo baruhawe kabiri ('doses' ebyiri), kandi bose bahise bagira ubwirinzi burwanya coronavirus. Prof Pollard yabwiye BBC ati: "Ntabwo tuzi ikigero gicyenewe cy'ubwirinzi, ariko dushobora kubwongera ku kigero cyo hejuru cyane hashoboka dutanga 'dose' ya kabiri". Nta kibazo ruteza? Yego, ntacyo, ariko hari ingaruka ruteza zo ku ruhande. Nta ngaruka zashyira ubuzima mu kaga urwo rukingo ruteza, ariko 70% by'abantu bakoreweho ubushakashatsi kuri urwo rukingo bamwe bagize ikibazo cyo guhinda umuriro, abandi barwara umutwe. Abashakashatsi bavuga ko ibi bishobora gukizwa no gufata ibinini bya 'paracetamol'. Prof Sarah Gilbert, wo kuri Kaminuza ya Oxford, agira ati: "Haracyari akazi kenshi ko gukora mbere yuko twemeza niba urukingo rwacu ruzafasha mu guhashya icyorezo cya Covid-19, ariko ibi twagezeho by'ibanze biratanga icyizere". Ni iki gikurikiyeho muri iri gerageza? Kugeza ubu ibyagezweho biratanga icyizere, ariko intego y'ibanze ni ukumenya niba koko uru rukingo rutekanye kuburyo rwahabwa abantu nta kibazo. Ubu bushakashatsi ntabwo bugaragaza niba rushobora gukingira abantu ntibarware cyangwa niba rushobora kugabanya ibimenyetso bya Covid-19. Mu igerageza, ibizamini by'abarwayi birasesengurwa Mu Bwongereza, abantu barenga 10,000 ni bo bagiye gukorerwaho igice cy'ubu bushakashatsi gikurikiyeho. Ariko, aya magerageza y'uru rukingo yaranaguwe agera mu bindi bihugu kuko ikigero cya coronavirus kiri hasi mu Bwongereza, bikaba byagorana rero kumenya niba uru rukingo rutanga umusaruro. Hari gukorwa andi magerageza magari yarwo ku bantu 30,000 muri Amerika ndetse no ku bantu 2,000 muri Afurika y'epfo hamwe no ku bantu 5,000 muri Brazil. Hari no gusabwa ko hakorwa amagerageza yo guhinyuza azwi nka 'challenge trials', aho abantu bakingiwe bakwanduzwa coronavirus ku bushake. Ariko, kuri iki, hari impungenge za kinyamwuga zo kwirinda kubikora bitewe nuko nta muti uriho wa coronavirus. Ruzangeraho ryari? Birashoboka ko urukingo rwa coronavirus rutanga umusaruro ruzemezwa mbere y'impera y'uyu mwaka, ariko ntabwo ruzahita rusakara ku isi hose. Abakora mu rwego rw'ubuvuzi no kwita ku barwayi ni bo bazaruhabwa mu ba mbere. Cyo kimwe n'abageze mu zabukuru kuko bafatwa nk'abafite ibyago byinshi cyane byo kwandura Covid-19 bitewe n'ikigero cy'imyaka yabo no kuba baba basanzwe barwaye izindi ndwara zijyanye n'izabukuru. Ariko, gutanga urukingo mu bice bitandukanye ku isi bishoboka ko, nibyihuta cyane bishoboka, bizaba mu mwaka utaha, niba ibintu byose bigenze neza uko byateganyijwe. Minisitiri w'intebe w'Ubwongereza Boris Johnson yagize ati: "Birumvikana ko mfite icyizere, ndikubisabira, ariko kuvuga ko nizeye 100% ko tuzabona urukingo muri uyu mwaka, byaba, nubwo bibabaje bwose, ari ugukabya". "Aho ntiturahagera". Kugerageza izindi nkingo byo bigeze hehe? Uru rukingo rwa Kaminuza ya Oxford yo mu Bwongereza si rwo rwa mbere rugeze kuri iki cyiciro, hari n'amatsinda yo muri Leta Zunze Ubumwe z'Amerika no mu Bushinwa nayo yatangaje ibyagezweho nk'ibi. Kompanyi Moderna yo muri Amerika ni yo yabaye iya mbere mu kugera kuri iki cyiciro kandi urukingo rwayo rushobora kurema ubwirinzi (antibodies) buganza coronavirus. Batera mu mubiri akaremangingo ka coronavirus (coronavirus RNA), kagahita gatangira gukora proteyine za virusi mu rwego rwo gukangura ubwirinzi bw'umubiri ngo butangire guhangana na coronavirus nyayo. Kompanyi za BioNtech na Pfizer na zo zageze ku bishimishije muri uru rwego, zikoresheje urukingo rugendeye kuri RNA.