A potential discovery of highly fatal SARS coronavirus?

Has a highly fatal SARS coronavirus already been discovered? Maybe yes, but just its report is highly concerning. On January 4, 2024, a letter to the editor was uploaded to a preprint server which gave too few details but described a 100 percent fatal virus in genetically modified mice. The modifications made these mice similar to humans by adding a human ACE2 receptor to their cells, including in …

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