Table 1.
Positive samples for SARS-CoV-2 RNA in surfaces at different locations in Belo Horizonte, Brazil.
| Category | Sample ID | Surface (material) | Ct value (N1) | Concentration (N1) (genomic units/10 cm2) |
|---|---|---|---|---|
| Health care units | HCU 29C | Wall (brickwork) | 25.9 | 67.9 |
| HCU 2 B | Floor (concrete) | 34.1 | ≤1 | |
| HCU 3 N | Floor (concrete) | 37.2 | ≤1 | |
| HCU 8 A | Floor (concrete) | 28.5 | 11.7 | |
| HCU 12 E | Floor (concrete) | 37.7 | ≤1 | |
| HCU 13 J | Wall (concrete) | 34.5 | ≤1 | |
| HCU 29 A | Sidewalk (concrete) | 34.2 | ≤1 | |
| HCU 29 M | Sidewalk (concrete) | 36.8 | ≤1 | |
| HCU 30C | Floor (concrete) | 36.2 | ≤1 | |
| HCU 3 D | Bench (metal) | 34.1 | ≤1 | |
| HCU 3 I | Bench (metal) | 34 | ≤1 | |
| HCU 1 D | Bench (metal) | 31.6 | ≤1 | |
| HCU 9H | Bench (metal) | 36.7 | ≤1 | |
| HCU 11C | Handrail (metal) | 36.4 | ≤1 | |
| HCU 9 A | Bench (metal) | 33.1 | ≤1 | |
| HCU 13 E | Bench (metal) | 36.9 | ≤1 | |
| HCU 21 D | Pillar (rock) | 36 | ≤1 | |
| HCU 29 F | Bench (plastic) | 23.7 | 299.8 | |
| HCU 29H | Bench (plastic) | 23.3 | 392.8 | |
| HCU 12 D | (glass) | 36 | ≤1 | |
| Public squares | PS 18 R | Wall (brickwork) | 37.4 | ≤1 |
| PS 1 E | Table (concrete) | 33.1 | ≤1 | |
| PS 3C | Bench (concrete) | 35.8 | ≤1 | |
| PS 6 G | Bench (concrete) | 37.5 | ≤1 | |
| PS 18 X | Sidewalk (concrete) | 35.4 | ≤1 | |
| PS 15 F | Bench (wood) | 34.8 | ≤1 | |
| PS 3 K | Bench (metal) | 35.7 | ≤1 | |
| PS 17 J | Handrail (metal) | 36.5 | ≤1 | |
| PS 18 I | Handrail (metal) | 35.1 | ≤1 | |
| PS 2 G | Bench (rock) | 35.6 | ≤1 | |
| PS 2H | Bench (rock) | 34 | ≤1 | |
| PS 2 I | Bench (rock) | 33.9 | ≤1 | |
| PS 9C | Bench (rock) | 35.5 | ≤1 | |
| PS 17 A | Bench (rock) | 32.3 | ≤1 | |
| PS 17 D | Bench (rock) | 32 | ≤1 | |
| PS 17 E | Bench (rock) | 34 | ≤1 | |
| PS 18 M | Bench (rock) | 36.9 | ≤1 | |
| Bus terminals | BT 1 A | Handrail (metal) | 32.8 | ≤1 |
| BT 1 B | Handrail (metal) | 34.5 | ≤1 | |
| BT 1C | Handrail (metal) | 29 | 8.4 | |
| BT 1 Q | Handrail (metal) | 32.1 | ≤1 | |
| BT 1 S | Handrail (metal) | 32.8 | ≤1 | |
| BT 1 W | Handrail (metal) | 29 | 8.4 | |
| BT 2 D | Handrail (metal) | 34.7 | ≤1 | |
| Other public places | OPP 11C | Floor (concrete) | 36.7 | ≤1 |
| OPP 5 A | Bench (metal) | 36.2 | ≤1 | |
| OPP 10 A | Bench (metal) | 38.1 | ≤1 | |
| OPP 11 A | Bench (metal) | 34.7 | ≤1 | |
| Public market | PM 1 G | Wall (concrete) | 36.9 | ≤1 |
For PCR quantification, we consider 1 SARS-CoV-2 plaque forming unit as 1 SARS-CoV-2 genomic unit.