1news.co.nz (2022-10-18). Scientists make new Covid variant with 80% kill rate in mice

Boston University has created a new Covid-19 variant which resulted in an 80% kill rate in mice, according to a new research paper.

livemint.com (2022-10-18). This new man-made Covid strain is 5 times more infectious with 80% kill rate

The researchers at Boston University have claimed that they have developed a Covid-19 strain that inflicts severe disease and has 80 per cent kill rate.