Table 2.

Active and residual non-active transmission foci classification parameters and nominated response interventions adopted in Isabel province surveillance-response SDSS

Focus type	Characteristics	SDSS classification parameters	Nominated response interventions
Residual active	- Transmission occurring in an area of ongoing transmission	All areas within a 3km geographical range of a positive case in an area that has had one or more additional positive recorded case within the last 3 months	Focal screening and treatment
			Larval source management
	- Effectively controlled with major reductions recorded after interventions		Updated geographical reconnaissance
			Community Awareness
New active	- Transmission occurring in area that has had transmission for less than 2 years or has never had local transmission - 1st Degree: Only introduced cases present; 2nd Degree: Secondary and indigenous cases present	All areas within a 3km geographical range of a positive case in an area of known transmission but has not had an additional reported case within 3 months	Focal screening and treatment
			Focal indoor residual spraying Long lasting insecticidal net assessment and re-distribution as required Larval source management Updated geographical reconnaissance Community Awareness
New potential	- Isolated imported, induced or relapse cases occurring only	All areas within a 3km geographical range of an imported positive case in a known receptive area that has not had transmission for a period of 2 years	Focal screening and treatment
			Focal indoor residual spraying
	- Receptive area with no transmission for at least 2 years		Long lasting insecticidal net assessment and re-distribution as required
			Larval source management
			Updated geographical reconnaissance
			Community Awareness
Residual Non-active	- History of local transmission however not within the last 2 years - Relapses or delayed primary infections with P. vivax or treatment failure of infection before transmission	All areas within a 3km geographical range of a relapsed case in a known receptive area that has not had transmission for a period of 2 years	Focal screening and treatment
			Direct observed treatment and case follow-up Updated geographical reconnaissance Community Awareness