Probably because people just love to BLAME. Seriously, why cast aspersions on ANYONE? This is an old disease that has probably mutated numerous times, and this is a new GLOBAL event, for humans to deal with. We are learning as fast as we can. Especially the professionals. And the media are flubbing up as much as everyone else. I just hope when we finally get the real scoop, that the disease will not have mutated again. So far, these nurse cases just don't make sense. UGH. JMO
I don't think it's a mystery as to what happened with the nurse. Dallas hospital went all out trying to treat Mr. Duncan (despite what family members of Mr. Duncan has been claiming). They had a large team treating him (meaning a lot of people involved). Wearing PPE according to cdc guidelines. But looking at these guidelines, that PPE appears to be minimum protection.
They were not wearing hazmat suits like Doctors without borders wear. I also don't think they were getting sprayed with a disinfectant after emerging from Mr. Duncan's room as they do in Africa.
Dallas hospital was also carrying out high risk procedures for spreading the virus such as ventilation and dialysis.
Dallas hospital is not the one of four hospitals designed for biosafety level 4 procedures. Even if minimum CDC guidelines were adequate, these doctors and nurses likely didn't practice how to take these PPE off numerous times like they do in specially designed biosafety level 4 hospitals.
This infection was very predictable, and not mysterious whatsoever.
The same applies to Spain, by the way. The hospital was not biosafety level 4.