Steve MonroeMedical experts say they still don’t know why two nurses treating an Ebola victim in Texas contracted the disease, but they say they don’t believe the virus has mutated in such a way that it can be transmitted through the air. Dr. Tom Frieden, director of the Centers for Disease Control and Prevention, told a congressional subcommittee Thursday that while the CDC is “absolutely looking for other mutations” in the Ebola virus, it hasn’t found any. “We don’t think it is transmitting in a different way” other than through bodily fluids, he said. More