Table 4.
Literature values for terminal survival half-life (t½) of SARS-CoV-2 and influenza virus H1N1 on clothing/fabrics.
| Prototypic fabric | Organic load | Temperature (RH) | Survival t½ | Time needed for 1 log10 reduction in titer | Time needed to decrease viral burden below ID50a | Reference |
|---|---|---|---|---|---|---|
| SARS-CoV-2 | ||||||
| Cloth | None added | 22 °C (65%) | 27 min | 1.5 h | 5.9 h | 6 |
| Scrub (cotton/polyester) | None added | 22 °C (40–50%) | 1.0 h | 3.3 h | 13 h | 15 |
| Cotton cloths | None added | 25–27 °C (35%) | 23 h | 77 h | 306 h | 16 |
| Cotton | Tripartite soil | 20 °C (35–40%) | 1.7 h | 5.7 h | 23 h | 17 |
| Cotton | Tripartite soil | 20 ± 1 °C (50%) | 40 h | 134 h | 537 h | 18 |
| Cotton T-shirt | None added | 21.5 ± 1 °C (45%) | 10 h | 34 h | 136 h | 19 |
| Polyester sports shirt | None added | 21.5 ± 1 °C (45%) | < 45 min | < 2.5 h | < 10 h | 19 |
| Influenza virus H1N1 | ||||||
| J-cloth | None added | 17–21 °C (23–24%) | < 0.30 min | < 1 min | < 6.5 min | 20 |
| Jersey | None added | 27 °C (37%) | 1.3 min | 4.3 min | 28 min | 21 |
| Cardigan | None added | 27 °C (37%) | 2.9 min | 9.5 min | 62 min | 21 |
| T-shirt | None added | 27 °C (37%) | 3.5 min | 12 min | 78 min | 21 |
ID50 infectious dose50, RH relative humidity, t½ half-life; tripartite soil 0.25% bovine serum albumin, 0.35% tryptone, and 0.08% bovine mucin29.
aCalculated assuming an initial deposited virus burden of 1.0 × 106 plaque-forming units (PFU) and an estimated human ID50 of 250 PFU (SARS-CoV-2); or an initial deposited virus burden of 1.0 × 106 tissue culture infectious dose50 (TCID50) and an estimated human ID50 of 0.6 TCID50 (influenza virus).