Figure 2.

Preparation of the rooms for peracetic acid dry fog fumigation. Stars indicate three different locations of SARS-CoV-2-contaminated test coupons, placed 4 ft above the floor. The dry fog system circle on the doorway between the rooms marks the location of the dry fogger; arrows indicate the directions of the fog nozzles. Numbers 1–14 indicate the locations of the biological indicators placed throughout the room to validate room decontamination.