Why? Would it not make it easier to control if not airborne?
The worst case for any disease with a mortality rate this high is airborne transmission.
There is a strain of Ebola named Ebola Reston. This strain had a kill rate of over 90 percent, and it was airborne transmitted. It wiped out an entire laboratory in Reston, VA back in the 90’s.
The only upside to this virus is that it only affected monkeys. It killed every monkey in the lab.