Cudurka halista ah ee neef-mareenka coronavirus 2 (SARS-CoV-2), cudur-sidaha keena cudurka coronavirus ee ugu dambeeyay 2019 (COVID-19), waa fayraska RNA-ga ee dareen-togan, oo leh cabbir genome ah oo ku dhow 30kb . Noocyo badan oo SARS-CoV-2 ah oo leh saxiixyo is beddel ah oo kala duwan ayaa soo baxay inta lagu jiro cudurka faafa. Iyada oo ku xidhan muuqaalkooda is-beddelka borotiinka, kala duwanaanshiyaha qaar ayaa muujiyay gudbinta sare, caabuqa, iyo fayraska.

Qabiilka BA.2.86 ee SARS-CoV-2, oo markii ugu horreysay la aqoonsaday Agoosto 2023, ayaa si dabiici ah uga duwan farriimaha Omicron XBB ee hadda wareegaya, oo ay ku jiraan EG.5.1 iyo HK.3. Nasabka BA.2.86 wuxuu ka kooban yahay in ka badan 30 beddelaad oo borotiinka taranka ah, taas oo muujinaysa in nasabkani uu si aad ah u awoodo inuu ka baxsado difaaca ka-hortagga-SARS-CoV-2 ee horay u jiray.

JN.1 (BA.2.86.1.1) waa kala duwanaanshaha ugu dambeeyay ee SARS-CoV-2 ee ka soo degay BA.2.86. JN.1 wuxuu ka kooban yahay isu beddelka L455S ee borotiinka sare iyo saddex isbeddellada kale ee borotiinnada aan-sikel ahayn. Daraasadaha lagu baarayo HK.3 iyo noocyo kale oo "FLip" ah ayaa muujiyay in helitaanka isbeddelka L455F ee borotiinka taranka ay la xiriirto kororka gudbinta fayraska iyo awoodda difaaca jirka. Isbeddellada L455F iyo F456L ayaa lagu naaneystaa "leexo”isbeddellada sababtoo ah waxay beddelaan booska laba asiidh amino, oo lagu calaamadiyey F iyo L, borotiinka sare.

We baysen medical waxa ay siin kartaa covid-19 is tijaabinta guriga, ku soo dhawaada nala soo xidhiidh wixii tafaasiil ah.