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Table 1 Case definition and classification for malaria used in Cabo Verde and consistent with the WHO definitions [17, 18]

From: Updates on malaria epidemiology and profile in Cabo Verde from 2010 to 2019: the goal of elimination

Case definition
 Malaria case, confirmed Malaria case (or infection) in which the parasite has been detected in a diagnostic test, i.e., microscopy, a rapid test or a molecular diagnostic test
 Malaria, all cases All malaria cases irrespective of Plasmodium species (including imported case)
 Malaria case, imported Malaria case or infection in which the infection was acquired outside the area in which it is diagnosed (get infected outsider from Cabo Verde)
 Malaria case, indigenous A case contracted locally with no evidence of importation and no direct link to transmission from an imported case (get infected in Cabo Verde)
 Malaria elimination Interruption of local transmission (reduction to zero incidence of indigenous case) of a specified malaria parasite in a defined geographical area as a result of deliberate activities. Continued measures to prevent re-establishment of transmission are required
Case classification
 Imported case Malaria case or infection in which the infection was acquired outside the area in which it is diagnosed. Infection from a country outside of Cabo Verde
 Indigenous case A case contracted locally with no evidence of importation and no direct link to transmission from an imported case
 Introduced case A case contracted locally, with strong epidemiological evidence linking it directly to a known imported case (first-generation local transmission)
 Recrudescent case Malaria case attributed to the recurrence of asexual parasitaemia after anti-malarial treatment, due to incomplete clearance of asexual parasitaemia of the same genotype(s) that caused the original illness