Two VidaShield VS01 units were installed in a biohazard room of an acute care hospital in Tennessee. The biohazard room was under negative pressure from the surrounding areas.
VidaShield’s scientific team conducted air and surface sampling on May 13 to 14, 2015, in the 340 sq. ft. biohazard room, which was under negative pressure to the adjacent 12,000 sq. ft. operating room suite. The activity and occupancy in the OR suite was twice as busy during the pre-installation sampling than during the post-installation sampling. An independent lab analyzed the samples.
The relative change in challenge and control areas (i.e., relative changes of 33% for air and 99% for surfaces) demonstrated the effectiveness of VidaShield. The Colony Forming Units (CFU’s) in air samples from the control area were 50% greater due to the increased occupancy versus 5% less in the biohazard room. The CFU’s in the control area surface samples were 189% greater in the control areas versus 15% less in the biohazard room.
The level of contamination in the rooms where the VidaShield units were installed were lower on average than the corridors, break rooms and other employee areas. This was true even though the biohazard room was negative pressure to the positive pressure of the air-flow corridors—meaning that all of the contamination in the hallways was drawn into the biohazard room in addition to the heavy biological loading in that area because of the centralization/containment or microbes.