> One study has put the delta R0 around the same as Measles...which is 3x original COVID, but still less than Chicken Pox.
I think you swapped Chicken Pox and Measles in your example, as the delta R0 seems similar to Chicken Pox and Chicken Pox has a lower R0 than Measles.
Chicken Pox, which, pre-vaccine, was considered an infection everyone would get.