jasonm2128 t1_iss3ckx wrote on October 18, 2022 at 8:32 AM

Reply to comment by Techjunkie81 in Boston University researchers claim to have developed new, more lethal COVID strain in lab - Researchers at Boston University added a spike protein from the Omicron variant with the original Wuhan strain, which has an 80% kill rate (in certain mice) by izumi3682

Not a scientist either, but my guess is they wanted truly compare the viruses. Knowing the mice are susceptible it eliminates the possibility that they didn’t catch it in the experiment to see how the virus impacts the whole group for an accurate result.