Raws li lub Kaum Ob Hlis 3, muaj 6 thaj chaw muaj kev pheej hmoo siab thiab 22 thaj chaw muaj kev pheej hmoo nruab nrab thoob plaws tebchaws. Thoob ntiaj teb, Tebchaws Meskas, Fabkis, Sweden, Denmark, Iceland, South Africa, thiab lwm yam tau tshawb pom cov kab mob tshiab tshiab. Tus Thawj Fwm Saib Xyuas Nyiaj Txiag Tebchaws Meskas Yellen tau hais rau hnub thib 2 uas tau hais tias qhov tshwm sim ntawm Delta strain thaum pib ntawm lub xyoo no tau ua rau muaj kev poob qis hauv Asmeskas kev lag luam, nws tseem tsis tau daws tag nrho txog tam sim no. Omi Keron mutant strain tuaj yeem ua rau muaj teeb meem ntawm cov saw hlau thiab txwv kev thov. , Yog li ua rau kev lag luam thoob ntiaj teb qeeb qeeb.
Tus kws tshuaj ntsuam xyuas' qhov kev xav: Raws li kev cuam tshuam ntawm kev sib kis, cov khoom siv sib txuas tau nquag tshwm sim, rhuav tshem qhov sib npaug ntawm cov khoom siv thiab kev xav tau hauv kev ua lag luam, ua rau kev nce nqi hauv lub sijhawm luv mus rau nruab nrab. Thaum cov kab mob tshiab raug ntaus, kev lag luam kev loj hlob yuav raug txo kom tsawg, thiab kev yuav khoom yuav raug txo, uas yuav ua rau tsis zoo rau cov nqi steel hauv nruab nrab thiab ntev.
