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Given the prevalence of nosocomial infections both in the U.S. and abroad tells me that HCW are not following infection control protocols, or the protocols are inadequate. “ICU-acquired infection is common and often associated with microbiological isolates of resistant organisms. The potential effects on outcome emphasize the importance of specific measures for infection control in critically ill patients.(JAMA. 1995;274:639-644)”

PPE gives one a false sense of security: that exposure to infectious material or exposing someone else to infectious material can be prevented if one merely wears PPE. Nothing could be further from the truth.
IMHO, PPE is a last resort barrier. The work habits of the HCW are of equal importance: working carefully and cautiously, paying close attention to detail while working, frequent decontamination and complete decontamination prior to removal of the PPE are also critical. It only takes one mistake and the HCW is exposed, unfortunately to a far more virulent nosocomial infection.

Note: The Ebola virus need not be ‘airborne’ for the HCW in Spain to have been contaminated. Fomites on their PPE, inadequate PPE, and exposure while removing contaminated PPE are more likely modes of transmission of the infection.