Introduction: Malaria is a parasitic disease caused by Plasmodium sporozoites. Peruvian National Regulations for Malaria and Severe Malaria state that active surveillance of febrile patients is the main activity to perform, since it allows early case detection.Objective: To determine the usefulness of fever as a clinical predictor for malaria in endemic areas of Loreto; sensitivity and specificity of fever were also assessed.Material and Method: We prospectively included 400 febrile patients who presented to the Malaria Program at Loreto Regional Hospital from October to December 2002.Results: We found a 42.1% sensitivity (95% CI: 31.6-53.3), 62.7% specificity (95% CI: 57.3-67.7), 20.9% positive predictive value (95% CI: 15.2-28.0), 82.2% negative predictive value 82.2 (95% CI: 76.9-86.5), 58,8% accuracy (95% IC: 53,9-63,5). Fever (axillary temperature > 37,5 degrees Celsius...

Introduction: Malaria is a parasitic disease caused by Plasmodium sporozoites. Peruvian National Regulations for Malaria and Severe Malaria state that active surveillance of febrile patients is the main activity to perform, since it allows early case detection.Objective: To determine the usefulness of fever as a clinical predictor for malaria in endemic areas of Loreto; sensitivity and specificity of fever were also assessed.Material and Method: We prospectively included 400 febrile patients who presented to the Malaria Program at Loreto Regional Hospital from October to December 2002.Results: We found a 42.1% sensitivity (95% CI: 31.6-53.3), 62.7% specificity (95% CI: 57.3-67.7), 20.9% positive predictive value (95% CI: 15.2-28.0), 82.2% negative predictive value 82.2 (95% CI: 76.9-86.5), 58,8% accuracy (95% IC: 53,9-63,5). Fever (axillary temperature > 37,5 degrees Celsius...