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Table 1 Micro-stratification of malaria epidemiology

From: Operational efficiency and sustainability of vector control of malaria and dengue: descriptive case studies from the Philippines

Item Category
'Stable transmission' 'Unstable transmission' 'Sporadic transmission' 'Malaria prone'
Categorization criteria String of 6 or more months with continu-ous transmission in the period 2007-09 String of 2-5 months with continuous transmission in the period 2007-09 At least one indigenous case in the period 2005-09 No indigenous case in the period 2005-09
Number of barangays:     
Cagayan Province 15 77 164 565
Isabela Province 6 26 58 745
Objective Malaria control Pre-elimination Elimination Maintenance
Strategy:     
Clinical surveillance Passive Case Detection (PCD) Active Case Detection (monthly); PCD Mass blood survey (annually); case investigation; PCD Case investigation; PCD
Diagnosis and treatment Microscopy, Rapid Diagnostic Testing (RDT); treatment of confirmed cases Microscopy, RDT; treatment of confirmed cases Microscopy; treatment of confirmed cases Microscopy; treatment of confirmed cases
Long-lasting insecticidal nets (LLIN) 100% coverage of households 100% coverage of households 100% coverage of households Only in case of epidemic
Indoor residual spraying When LLIN gives no improvement after 1 year Only in case of epidemic or displaced populations Only in case of epidemic or displaced populations Only in case of epidemic
Environmental management Where appropriate Where appropriate Where appropriate Where appropriate
Social mobilization Health promotion Health promotion Health promotion Health promotion
  1. The unit of stratification was the barangay. Where the radius of a barangay was more than 5 km, the sub-barangay, or sitio, was used as stratification unit