COVID-19 Virus Kills 80% of Mice

A Boston lab has created a new deadly COVID strain with an 80% kill rate. Dan Rivers: The obvious reason this is so dangerous is kind of gain of function, which they're denying. He says virologists will tell you that those two things are usually inversely related. Reeves: You're overriding evolution to create a virus now that's not only super infectious but super fatal too.