Yellow colored transparent plastic card found in a designated supply box in or outside animal rooms.
Yellow or Potentially Contaminated Rooms
Previously contaminated animal room and is now believed to be free from any contaminants. Prior to contamination status release, surveillance results must confirm "clean" status. Certain viral outbreaks may have insufficient information regarding the virus and require animal rooms to placed in "potentially contaminated" state at the discretion of the area veterinarian.