Table 1. Category A Pathogen's Environmental Persistency.
| Pathogen | Averaged decay rate in the air (γair) (hr−1) | Range of decay rate in the air (γair) (hr−1)a | Condition | Source | Averaged decay rate on fomite (γfomite) (hr−1) | Range of decay rate on the fomite (γfomite) (hr−1)a | Condition | Source |
| B. anthracis | 8.16×10−5 | (1.11×10−5, 1.97×10−4) | NA | [43], [44] | 3.36×10−5 | (1.92×10−5, 4.64×10−5) | NA | [43], [45], [46], [47] |
| Y. pestis | 2.75 | (2.10, 3.49) | T = 26°C, rH = 20–87% | [48] | 4.55×10−1 | (0.04, 1.24) | T = 11–22°C, rH = 30–55% metal, steel, glass, paper, and Polyethylene | [49], [50] |
| F. tularensis | 3.27 | (0.55, 9.20) | T = 20–40°C, rH = 85% | [51], [52], [53] | 2.39×10−1 | (0.01, 0.46) | T = 25–37°C, rH = 10–100% on metal | [50] |
| Variola major | 4.55×10−2 | (1.00×10−2, 1.30×10−1) | T = 10–34°C, rH = 20–80% | [54], [55] | 6.89×10−3 | (5.45×10−3, 9.95×10−3) | T = 25–37°C, rH = 3–96% on glass | [56] |
| Lassa | 2.6 | (0.78, 4.14) | T = 24–28°C, rH = 30–80% | [57] | 7.67×10−1 b | (0.68, 0.92) | T = 20°C, rH = NA on aluminum | [58] |
a
Uniform distribution is assumed between the maximum and minimum values.
b
Due to the lack of information on Lassa, the average of the decay rates of Bunyaviridae hantavirus, Sicilian virus Sabin, and Crimean-Congp on fomites are used for Lassa.