Node-level interventions

Node-level interventions determine what will be distributed to each node to reduce the spread of a disease. For example, spraying larvicide in a village to kill mosquito larvae is a node-level malaria intervention. Sometimes this can be an intermediate intervention that schedules another intervention. Node-level disease outbreaks are also configured as “interventions”. In the schema, these are labeled as NodeTargeted.

It is also possible (but not required) to configure why a particular intervention is distributed by adding trigger conditions to the intervention. For example, interventions can be triggered by notifications broadcast after some an event, such as Births, NewInfectionEvent, and more. It’s also possible to have one intervention trigger another intervention by asking the first intervention to broadcast a unique string, and having the second intervention be triggered upon receipt of that string. See Event list.

Vector control

The following node-level interventions are commonly used for vector control.

Toggle parameter table

Intervention	Target life stage	Target biting preference	Target biting location	Effect
AnimalFeedKill	node	feeding cycle	animal	killing
ArtificialDiet	feeding cycle	human	all	blocking
Larvicides	larva	all	all	killing, reduction
MosquitoRelease
OutdoorRestKill	feeding cycle	human	outdoor	killing
OvipositionTrap	feeding cycle	all	all	killing
ScaleLarvalHabitat	larva	all	all	reduction
SpaceSpraying	feeding cycle	human	outdoor	killing
SpatialRepellent	feeding cycle	all	outdoor	blocking
SugarTrap	adults	all	all	killing

Summary table of node-level interventions

The following table provides an at-a-glance overview of the node-level interventions.

Toggle parameter table

Intervention	Short description	Able to be serialized?	Uses insecticides	Time-based expiration?	Purge existing?	Vector killing contributes to:	Vector effects
AnimalFeedKill	Kill vectors when feeding on animals		Y		Y	Die Before Attempting Human Feed	Killing
ArtificialDiet	Kill vectors when feeding on artificial diet				Y		Attract
BroadcastNodeEvent	Send a node event to node
IndoorSpaceSpraying	IRS for people within a node		Y		Y	Indoor Die After Feeding	Killing
InputEIR	Deliver infectious bites without vectors				Y
Larvicides	Kill larva in node		Y		Y	Larva	Larval killing
MalariaChallenge	Deliver infectious bites or sporozoites with out vectors
MigrateFamily	Schedule trip for family groups in a node
MosquitoRelease	Add vectors to a node
MultiInsecticideIndoorSpaceSpraying	Node IRS involving multiple insecticides		Y		Y	Indoor Die After Feeding	Killing
MultiInsecticideSpaceSpraying	Outdoor spraying involving multiple insecticides		Y		Y	Die Without Attempting To Feed, Die Before Attempting Human Feed	Killing
MultiNodeInterventionDistributor	Distribute multiple interventions instead of one			Y/N
NLHTIVNode	Distribute node intervention on node event			Y/N
NodeLevelHealthTriggeredIV	Distribute individual intervention on individual event			Y
NodePropertyValueChanger	Change the NodeProperty of a node
Outbreak	Not tested with Malaria
OutdoorRestKill	Kill vector after feeding outdoors				Y	Outdoor Die After Feeding	Killing
OvipositionTrap	Kill vector attempting to lay eggs				Y	Die Laying Eggs	Killing
ScaleLarvalHabitat	Modify capacity of larval habitat				Sort of
SpaceSpraying	Outdoor insecticide spraying		Y		Y	Die Without Attempting To Feed, Die Before Attempting Human Feed	Killing
SpatialRepellent	Block vectors before they can attempt to feed on humans		Y		Y		Repelling
SugarTrap	kill vectors when sugar feeding		Y	Y	Y	Emerging, Trap Feeding	Killing

• AnimalFeedKill
• ArtificialDiet
• BroadcastNodeEvent
• FirstNodeWithNodePropertyEventCoordinator
• IndoorSpaceSpraying
• InputEIR
• Larvicides
• MalariaChallenge
• MigrateFamily
• MosquitoRelease
• MultiInsecticideIndoorSpaceSpraying
• MultiInsecticideSpaceSpraying
• MultiNodeInterventionDistributor
• NLHTIVNode
• NodeLevelHealthTriggeredIV
• NodePropertyValueChanger
• Outbreak
• OutdoorRestKill
• OvipositionTrap
• ScaleLarvalHabitat
• SpaceSpraying
• SpatialRepellent
• SugarTrap