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Table 1 List of pathogen-specific parameters values and references used to produce Figs. 3 and 4

From: Fomite-mediated transmission as a sufficient pathway: a comparative analysis across three viral pathogens

  Influenza Rhinovirus Norovirus
Pathogen-specific parameters       
1/γ: Infectious 6 [38–40] 10.4 [41] 15 [42]
period (days)       
α: Shedding rate (pathogen hours −1 people −1) 1×104 [43–45] 1×103 [46, 47] 2.88×103 [48, 49]
μF: Inactivation rate 0.121 [50–52] 1.44 [53, 54] 0.288 [8]
in fomites (hours −1) (0.058, 0.121) (0.990, 1.44) (0.0006, 0.288)
μH: Inactivation rate 88.2 [13, 50, 52] 0.767 [55] 1.07 [9, 56, 57]
in hands (hours −1) (55.2, 88.2)   (0, 1.07)
τFH: Transfer 0.1 [13, 16, 50, 58] 0.2 [55, 59–61] 0.07 [62]
efficacy (F to H) (proportion) (0.04, 0.16) (0.1, 0.40) (0.051, 0.089)
τHF: Transfer 0.025 [13, 16, 50, 58] 0.2 [55, 59–61] 0.13 [62]
efficacy (H to F) (proportion) (0.01, 0.04) (0.1, 0.40) (0.094, 0.166)
ϕH: Pathogen 0.15   0.15   0.90  
excreted to H (proportion) (0.10, 0.2) (0.10, 0.2) (0.50, 1)
ϕF: Pathogen 1−ϕH 1−ϕH 1−ϕH
excreted to F (proportion)       
π:Infectivity parameter in contact  
with x pathogens (unitless) a 6.93e-05 2.46e-3 4.78e-4
aH: rate pathogens are added to hands α ϕ H α ϕ H α ϕ H
(pathogen time −1 people −1)       
Venue-specific parameters       
λ: Accessible surfaces (proportion) (0, 0.6) (0, 0.6) (0, 0.6)
κ: fingertip to surface ratio per individual \(\frac {6e-06}{\lambda }\) \(\frac {6e-06}{\lambda }\) \(\frac {6e-06}{\lambda }\)
(1/people) b       
ρT: Rate of fomite touching (days −1) (0, 60) (0, 60) (0, 60)
ρFH: rate of pathogen pick up from fomites to hand ρ T τ FH κ ρ T τ FH κ ρ T τ FH κ
1/(days × people)       
ρFH: rate of pathogen deposit from hand to fomite ρ T τ HF ρ T τ HF ρ T τ HF
1/(days × people)       
aF: rate pathogens are added to fomites α ϕ F λ α ϕ F λ α ϕ F λ
(pathogen days −1 people −1)       
Cleaning parameters     
ΘF: Rate of fomite cleaning (days −1) (0, 2) (0, 2) (0, 2)
ΘH: Rate of hand cleaning (days −1) (0, 3) (0, 3) (0, 3)
qF: Fomite cleaning efficacy (proportion) 1 1 1
qH: Hand cleaning efficacy (proportion) 1 1 1
θF: Effective fomite cleaning rate q F Θ F q F Θ F q F Θ F
θH: Effective hand cleaning rate q H Θ H q H Θ H q H Θ H
Fixed parameters (across pathogens    
and venues)  
ρ: Inoculation (hours −1) 15.8 [23, 24] 15.8 [23, 24] 15.8 [23, 24]
χ: proportion of pathogens absorbed when 1 1 1
self-inoculation occurs (proportion)       
a Parameter fixed based on linearization of the dose-response curve
b Parameter fixed based on relative finger to body size.
  1. Point values appear on the left and references to the right. A range is also included for parameters that were used to perform a sensitivity analysis. Derived parameters are shown as a function of the parameters used to derive them. Bold headings are used to separate the table into subsections for legibility
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BMC Infectious Diseases

ISSN: 1471-2334

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