Even though the most efficient HEPA and laminar flow systems are present in the operating room, Viruses, VOCs and even bacteria get in. HEPA filtration is only effective down to 0.3 microns. Viruses are smaller than 0.3 microns.
This is significant considering the fact that The Journal of Bone and Joint Surgery is reporting that an estimated 30% of surgical site infections are directly deposited from the air. Orthopedics, otolaryngology--head and neck surgery, open heart and transplant surgery, are all at magnified risks of post-operative nosocomial infection. MRSA is a major contributor to that 30% of surgical site infections and, despite opinions to the contrary, MRSA does become airborne.
Unlike HEPA, Airocide®, the patented NASA bioconversion system, is not size dependent and it eliminates 99.999% of all airborne microbes including Methicillin-Resistant Staphylococcus Aureus (MRSA), without inert harmless trace vapors by molecular conversion.
The Airocide system is the best defense against the pathogens that somehow enter the OR despite the best barriers.