When ebola was a 90% mort rate bug, it didn’t travel well, and often burned out in a tight ring of death around it’s origination point.
When and if it mutates into a 20% mort rate bug and is a little tougher, able to ride on a sneeze, we’re going to have a REAL BIG PROBLEM.
I’ve wondered about mosquito or other biting insect transmission as well. Perhaps the pool of infected human blood hasn’t been large enough, yet, to facilitate its transmission by insect.