1. Surveillance policies and practices in transmission-reduction and elimination phases By Bayo S Fatunmbi [Technical Officer, Monitoring & Evaluation] ERAR-GMS, WHO Cambodia

2. Purpose ThemeTransmission-reduction phaseElimination phase Purpose To allow targeting of interventions, detection of potential outbreaks, and tracking of progress discover any evidence of the continuation or resumption of transmission; detect local and imported cases as early as possible; investigate and classify each case and focus of malaria; provide a rapid and adequate response; and monitor progress towards malaria elimination Reference: Table 3 of Strategy for Malaria Elimination in GMS, Page 25

3. Data reporting, recording and indicators used ThemeTransmission-reduction phaseElimination phase Data reporting, recording and indicators used Private sector is requested to report cases Aggregate numbers of outpatients, including those with uncomplicated P. falciparum malaria Number of inpatients with severe or complicated malaria, Deaths due to malaria Malariometric indicators Annual Parasite Incidence Test Positivity Rate (Micro RDT) Annual Blood Examination Rate (ABER) Malaria is a notifiable disease Private sector must report every case by law Number of local and imported cases, and residual or new active and potential foci of malaria

4. Detection, Investigation and Classification ThemeTransmission-reduction phaseElimination phase Detection method PCD at all levels of health system ACD in high-risk groups, especially migrants PCD at all levels of health system ACD to fill gaps in PCD system, in order to detect infections as early as possible, with particular focus on high- risk groups Reactive ACD in case investigation and clearing of foci Case and foci identification, investigation and classification No Yes

5. IT based Data Management & Indicators ThemeTransmission-reduction phaseElimination phase Technology, monitoring and evaluation Consolidate the use of new tools such as web-based data transmission, volunteer reporting via SMS Introduce case-based malaria surveillance Adequate case- and foci-based malaria surveillance fully functional across the entire territory of a country National computerized malaria elimination database or register established National malaria elimination monitoring committee set up Data elements Aggregate counts, Health facilities or districts/villages Case based, foci Case definition Confirmed clinical cases Any malaria infection (symptomatic and asymptomatic) Case investigation Admissions, deaths All cases Timescale Monthly Immediate notification