Topics: Acute respiratory distress syndrome, Dengue fever, Fever Pages: 1 (320 words) Published: January 9, 2014
Use of Anti-Aedes aegypti Salivary Extract Antibody Concentration to Correlate Risk of Vector Exposure and Dengue Transmission Risk in Colombia. Norte de Santander is a region in Colombia with a high incidence of dengue virus (DENV). In this study, we examined the serum concentration of anti-Aedes salivary gland extract (SGE) antibodies as a biomarker of DENV infection and transmission, and assessed the duration of anti-SGE antibody concentration after exposure to the vector ceased. We also determined whether SGE antibody concentration could differentiate between positive and negative DENV infected individuals and whether there are differences in exposure for each DENV serotype. We observed a significant decrease in the concentration of IgG antibodies at least 40 days after returning to an "Ae. aegypti-free" area. In addition, we found significantly higher anti-SGE IgG concentrations in DENV positive patients with some difference in exposure to mosquito bites among DENV serotypes. We conclude that the concentration of IgG antibodies against SGE is an accurate indicator of risk of dengue virus transmission and disease presence. Leptospirosis and dengue fever: a predictive model for early differentiation based on clinical and biochemical parameters. Leptospirosis and dengue fever are increasingly seen as causes of tropical febrile illness and often are clinically indistinguishable. This two-year prospective study from a tertiary care centre comprised 200 patients including 68 men (mean 34.8 years) with dengue and 73 (mean 46.19 years) with leptospirosis. Oliguria, icterus, muscle tenderness, anaemia, leukocytopenia, thrombocytopenia, elevated erythrocyte sedimentation rate (ESR), acute renal failure (ARF) and hypoalbuminaemia appeared more commonly in leptospirosis in comparison to dengue. Eighteen per cent mortality was observed in leptospirosis compared to one per cent in dengue. ARF, hyperbilirubinaemia, acute respiratory distress syndrome (ARDS), creatine...
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