SimpleBednet

The SimpleBednet intervention class implements Insecticide-Treated Nets (ITNs) in the simulation. ITNs are a key component of modern malaria control efforts, and have recently been scaled up towards universal coverage in sub-Saharan Africa. Modern bednets are made of a polyethylene or polyester mesh, which is impregnated with a slowly releasing pyrethroid insecticide. Mosquitoes that are seeking a blood meal will encounter a net and, if the net retains its physical integrity and has been correctly installed, the feeding attempt is blocked. Blocked feeding attempts also carry the possibility of killing the mosquito. Net ownership is configured through the demographic coverage, and the blocking and killing rates of mosquitoes are time- dependent.

Note

Parameters are case-sensitive. For Boolean parameters, set to 1 for true or 0 for false. JSON does not permit comments, but you can add “dummy” parameters to add contextual information to your files.

The table below describes all possible parameters with which this class can be configured. The JSON example that follows shows one potential configuration.

Parameter Data type Minimum Maximum Default Description Example
Blocking_Config JSON object NA NA NA Configures the rate of blocking for indoor mosquito feeds on individuals with an ITN. Specify how this effect decays over time using one of the Waning effect classes. 
{
    "Blocking_Config": {
        "Box_Duration": 3650,
        "Initial_Effect": 0,
        "class": "WaningEffectBox"
    }
}
Cost_To_Consumer float 0 999999 3.75 The unit cost per bednet (unamortized) 
{
    "Cost_To_Consumer": 4.5
}
Killing_Config JSON object NA NA NA The configuration of the rate at which mosquitoes die, conditional on a successfully blocked feed. Specify how this effect decays over time using one of the Waning effect classes. 
{
    "Killing_Config": {
        "Box_Duration": 3650,
        "Initial_Effect": 0.53429,
        "class": "WaningEffectBox"
    }
}
Usage_Config JSON object NA NA NA The user-defined WaningEffects to determine when and if an individual is using a bed net. Specify how this effect decays over time using one of the Waning effect classes. 
{
    "Usage_Config": {
        "class": "WaningEffectConstant",
        "Initial_Effect": 1.0
    }
}
Primary_Decay_Time_Constant float 0 1.00E+0 0 The primary decay time constant (in days) of the decay profile. 
{
    "Primary_Decay_Time_Constant": 180
}
Secondary_Decay_Time_Constant float 0 999999 1 The secondary decay time constant of the durability profile. This parameter is used when Durability_Profile is set to CONCENTRATION_VERSUS_TIME. 
{
    "Durability_Profile": "CONCENTRATION_VERSUS_TIME",
    "Secondary_Decay_Time_Constant": 730
}
Dont_Allow_Duplicates boolean NA NA 0 If an individual’s container has an intervention, set to true (1) to prevent them from receiving another copy of the intervention. Supported by all intervention classes. 
{
    "Dont_Allow_Duplicates": 0
}
Disqualifying_Properties string NA NA NA A list of IndividualProperty key:value pairs that cause an intervention to be aborted (persistent interventions will stop being distributed to individuals with these values). See NodeProperties and IndividualProperties parameters for more information. Generally used to control the flow of health care access. For example, to prevent the same individual from accessing health care via two different routes at the same time. 
{
    "Disqualifying_Properties": [
        "InterventionStatus:LostForever"
    ]
}
Intervention_Name string NA NA NA The optional name used to refer to this intervention as a means to differentiate it from others that use the same class. 
{
    "Intervention_Name":"Diagnostic_Sample"
}
New_Property_Value string NA NA NA An optional IndividualProperty key:value pair that will be assigned when the intervention is distributed. See NodeProperties and IndividualProperties parameters for more information. Generally used to indicate the broad category of health care cascade to which an intervention belongs to prevent individuals from accessing care through multiple pathways. For example, if an individual must already be taking a particular medication to be prescribed a new one. 
{
    "New_Property_Value": "InterventionStatus:None"
}

{
    "Events": [{
        "class": "CampaignEvent",
        "Nodeset_Config": {
            "class": "NodeSetAll"
        },
        "Start_Day": 1460,
        "Event_Coordinator_Config": {
            "class": "StandardInterventionDistributionEventCoordinator",
            "Target_Demographic": "Everyone",
            "Demographic_Coverage": 0.7,
            "Intervention_Config": {
                "class": "SimpleBednet",
                "Cost_To_Consumer": 3.75,
                "Killing_Config": {
                    "Initial_Effect": 0.6,
                    "Decay_Time_Constant": 1460,
                    "class": "WaningEffectExponential"
                },
                "Blocking_Config": {
                    "Initial_Effect": 0.9,
                    "Decay_Time_Constant": 730,
                    "class": "WaningEffectExponential"
                },
                "Usage_Config": {
                    "class": "WaningEffectConstant",
                    "Initial_Effect": 1.0
                }
            }
        }
    }],
    "Use_Defaults": 1
}