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Researchers at Boston University say they have developed a new COVID strain that has an 80% kill rate following a series of similar experiments first thought to have started the global pandemic that began in China.
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.
They extracted the spike protein from Omicron and attached it with the strain first detected at the onset of the pandemic that began in Wuhan, China. They then documented how the mice reacted to the hybrid strain.