Computational Modeling of Interventions and Protective Thresholds to Prevent Disease Transmission in Deploying Populations

Table 2

Model parameters for rubella transmission model.

Parameter	Description	Value	Source
𝑏IN	Inward troop rotation rate		[3, 16]
𝑏OUT	Outward troop rotation rate		[3, 16]
protect	Proportion of population protected via prior seropositivity	Scenario-dependent
𝛽𝑖𝑖	Effective transmission rate within unit 𝑖	Function of attack rate
𝛽𝑖𝑗	Effective transmission rate between units 𝑖 and 𝑗	Function of attack and contact rates
𝛽𝑖LOCAL	Effective transmission rate between unit 𝑖 and local population	Function of attack rate, contact rate, and local RUB incidence
𝑐𝑖	Contact rate with local population for unit 𝑖	Varies by unit
𝐶𝑖𝑗	Contact rate between unit 𝑖 and unit 𝑗	Varies by unit
𝜒	RUB attack rate (for soldiers)	0.019% (0.019%–8%)	[29–32]
incLOCAL	RUB incidence rate for local population	Varies over time	[28, 33]
1/𝜀	Duration of RUB incubation period	12 days (10–21 days)	[21, 26, 27]
1/𝛾	Duration of RUB infection period	12.5 days (11–14 days)	[20, 26, 27]
𝜇	Casualty rate for all units (nondisease related)	0.0007825	[16]
𝜌	Vaccination rate for dose 1 (95% vaccine efficacy)	Scenario-dependent