波士顿大学造出了新的冠状病毒，在现有的欧米克容的病毒上加了个蛋白刺突，杀死率达80%
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
The variant, a combination of Omicron and the original virus in Wuhan, killed 80% of the mice infected with it, the university said. When mice were only exposed to Omicron, they experienced mild symptoms.
The research was conducted by a team of scientists from Florida and Boston at the school's National Emerging Infectious Diseases Laboratories.