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