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Table 1 Foci classification in Thailand and key interventions

From: Leveraging geo-referenced malaria information to increase domestic financial support for malaria elimination in Thailand

Foci classification

Current definition

Key interventions targeted at index households and at-risk neighbors

A1

Active foci: village or subvillage with indigenous cases in the current year

Passive case detection, radical cure of all cases, 1–3-7, iDES, active case detection twice a year, vector control by IRS or ITN, health education on malaria

A2

Residual non-active foci: village or subvillage without indigenous cases in the current year but with indigenous cases in the previous 3 years

Passive case detection, radical cure of all cases, 1–3-7, iDES, active case detection once a year, vector control by IRS or ITN, health education on malaria

B1

Cleared foci but receptive: village or subvillage without indigenous cases for 3 consecutive years but vectors are found or environment is suitable for vector breeding

Passive case detection, radical cure for all cases, 1–3-7 for index cases

B2

Cleared foci but not receptive: village or subvillage without indigenous cases for 3 consecutive years but vectors are not found or environment is not suitable for vector breeding

Passive case detection, radical cure for all cases, 1–3-7 for index cases

  1. iDES integrated drug efficacy surveillance, IRS indoor residual spraying, ITN insecticide treated net