OutdoorNodeEmanator#

The OutdoorNodeEmanator intervention class implements node-level outdoor emanators against blood meal-seeking vectors. This imitates the use of outdoor insecticide sprays. These interventions release insecticides into the air to repel or kill mosquitoes within the node. The intervention is distributed to nodes and affects all the meal-seeking vectors in the node.

The following is how the intervetion acts on female vectors seeking a blood meal. Vectors are repelled at final_repelling = coverage*repelling rate and final_killing = coverage * killing rate. The vectors that move to continue to seek the meal and are not repelled or killed are calculated using the following formula: (1 - coverage*repelling)(1-coverage*killing). Please note that the killing affects all vectors that were not repelled by the intervention including those not affected by repelling due to coverage. These vectors can proceed to try find a meal indoors or outdoors, human and non-human and will be subject to other interventions affecting meal-seeking vectors. After the vectors have successfully fed (indoor or outdoor, human or non-human meal), the are subjected again to the killing effect of the emanator as they either exit the indoors or remain outdoors after the meal. The OutdoorNodeEmanator contributes to “survive without successful feed”, “die before attempt human feed”, and “die after feeding” statistics.

If there are multiple OutdoorNodeEmanators in the node (see Purge existing below), then the efficacies of the interventions are combined the following way: final_repelling = 1 - ( 1 - final_repelling)*(1-new_coverage*new_repelling) and final_killing = 1 - ( 1 - final_killing)*(1-new_coverage*new_killing).

OutdoorNodeEmanator also affects entire male population of the node at every time step, applying only the killing effect.

At a glance:

  • Distributed to: Nodes

  • Serialized: No, it needs to be redistributed when starting from a serialized file.

  • Uses insecticides: Yes. It can target subgroups using genomes.

  • Time-based expiration: No

  • Purge existing: Yes and No. Adding a new intervention of this class will overwrite any existing intervention of the same class with the same Intervention_Name. If Intervention_Name is different, both interventions will coexist and their efficacies will combine 1-(1-prob1)*(1-prob2) etc.

  • Vector killing contributes to: Survive Without Successful Feed, Die Before Attempt Human Feed, Die After Feeding, male vector daily mortality

  • Vector effects: Repelling, killing

  • Vector sexes affected: Females seeking blood-meal and all males

  • Vector life stage affected: Adult

Note

Parameters are case-sensitive. For Boolean parameters, set to 1 for true or 0 for false. Minimum, maximum, or default values of “NA” indicate that those values are not applicable for that parameter.

EMOD does not use true defaults; that is, if the dependency relationships indicate that a parameter is required, you must supply a value for it. However, many of the tools used to work with EMOD will use the default values provided below.

JSON format does not permit comments, but you can add “dummy” parameters to add contextual information to your files. Any keys that are not EMOD parameter names will be ignored by the model.

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

Cost_To_Consumer

float

0

999999

10

The unit cost per vector control (unamortized).

 
{
  "Cost_To_Consumer": 8
}

Disqualifying_Properties

array of strings

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"
  ]
}

Insecticide_Name

string

NA

NA

UNINITIALIZED STRING

The name of the insecticide defined in <config.Insecticides> for this intervention. If insecticides are being used, this must be defined as one of those values; if they are not being used this can be empty. It cannot have a value if you did not configure <config.Insecticides>.

 
{
  "Insecticide_Name": "carbamate"
}

Intervention_Name

string

NA

NA

SpatialRepellent

The optional name used to refer to this intervention as a means to differentiate it from others that use the same class.

 
{
  "Intervention_Config": {
    "class": "OutdoorNodeEmanator",
    "Intervention_Name": "Mosquito coil repellent"
  }
}

New_Property_Value

string

NA

NA

“”

An optional NodeProperty key:value pair that will be assigned when the intervention is applied. See NodeProperties and IndividualProperties parameters for more information.

 
{
  "New_Property_Value": "HasHealthCare:YES"
}

Repelling_Config

json object

NA

NA

NA

Defines the configuration of efficacy and waning for outdoor node emanator. Specify how this effect decays over time using one of the Waning effect classes.

 
{
  "Repelling_Config": {
    "Box_Duration": 100,
    "Decay_Time_Constant": 150,
    "Initial_Effect": 0.4,
    "class": "WaningEffectBoxExponential"
  }
}

Killing_Config

json object

NA

NA

NA

Defines the configuration of efficacy and waning for outdoor node emanator. Specify how this effect decays over time using one of the Waning effect classes.

 
{
  "Killing_Config": {
    "Box_Duration": 100,
    "Decay_Time_Constant": 150,
    "Initial_Effect": 0.4,
    "class": "WaningEffectBoxExponential"
  }
}

Spray_Coverage

float

0

1

1

The portion of the node that has been sprayed. This value is multiplied by the current efficacy of the WaningEffect.

 
{
  "Spray_Coverage": 0.6
}

{
    "Use_Defaults": 1,
    "Campaign_Name": "SpaceSpraying",
    "Events": [{
        "class": "CampaignEvent",
        "Nodeset_Config": {
            "class": "NodeSetAll"
        },
        "Start_Day": 4,
        "Event_Coordinator_Config": {
            "class": "NodeEventCoordinator",
            "Intervention_Config": {
                "class": "OutdoorNodeEmanator",
                "Cost_To_Consumer": 0,
                "Killing_Config": {
                    "class": "WaningEffectBoxExponential",
                    "Box_Duration": 100,
                    "Decay_Time_Constant": 150,
                    "Initial_Effect": 1
                },
                 "Repelling_Config": {
                    "class": "WaningEffectBoxExponential",
                    "Box_Duration": 100,
                    "Decay_Time_Constant": 150,
                    "Initial_Effect": 1
                },
                "Insecticide_Name": "carbamate",
                "Spray_Coverage": 0.9
            }
        }
    }]
}