OBJECTIVE: Using human IgG antibody response to the Aedes Nterm-34 kDa salivary peptide as an indicator of human exposure to Aedes bites in surveying exposed populations from areas at risk of dengue virus (DENV) transmission in urban settings of Vientiane city, Lao PDR. METHODS: Enzyme-linked immunosorbent assay tests were performed to measure the IgG response to Nterm-34 kDa peptide in blood samples collected within a flavivirus seroprevalence survey carried out in 2006 including 3558 randomly selected individuals. The level of IgG response to the Nterm-34 kDa peptide in individuals was analysed in relation to the level of urbanisation of the individual's residence, areas that presented significant differences in the prevalence of recent DENV infection. RESULTS: No differences were observed in the anti-Nterm-34 kDa IgG level between DENV-positive and DENV-negative individuals. However, the level of specific IgG response was higher among individuals living in slightly urbanised neighbourhoods than among those in more highly urbanised areas (P < 0.0001). Interestingly, a similar pattern had already been observed concerning the prevalence of recent DENV infection in the same populations. CONCLUSION: The results of this retrospective study indicate that the evaluation of human IgG response to the Aedes Nterm-34 kDa salivary peptide could be a useful indicator to identify places with risk of dengue virus transmission in urban endemic areas.
OBJECTIVE: Using human IgG antibody response to the Aedes Nterm-34 kDa salivary peptide as an indicator of human exposure to Aedes bites in surveying exposed populations from areas at risk of dengue virus (DENV) transmission in urban settings of Vientiane city, Lao PDR. METHODS: Enzyme-linked immunosorbent assay tests were performed to measure the IgG response to Nterm-34 kDa peptide in blood samples collected within a flavivirus seroprevalence survey carried out in 2006 including 3558 randomly selected individuals. The level of IgG response to the Nterm-34 kDa peptide in individuals was analysed in relation to the level of urbanisation of the individual's residence, areas that presented significant differences in the prevalence of recent DENVinfection. RESULTS: No differences were observed in the anti-Nterm-34 kDa IgG level between DENV-positive and DENV-negative individuals. However, the level of specific IgG response was higher among individuals living in slightly urbanised neighbourhoods than among those in more highly urbanised areas (P < 0.0001). Interestingly, a similar pattern had already been observed concerning the prevalence of recent DENVinfection in the same populations. CONCLUSION: The results of this retrospective study indicate that the evaluation of human IgG response to the Aedes Nterm-34 kDa salivary peptide could be a useful indicator to identify places with risk of dengue virus transmission in urban endemic areas.
Authors: Berlin Londono-Renteria; Papa M Drame; Thomas Weitzel; Reinaldo Rosas; Crystal Gripping; Jenny C Cardenas; Marcela Alvares; Dawn M Wesson; Anne Poinsignon; Franck Remoue; Tonya M Colpitts Journal: Parasit Vectors Date: 2015-10-13 Impact factor: 3.876
Authors: Berlin L Londono-Renteria; Heman Shakeri; Paula Rozo-Lopez; Michael J Conway; Natasha Duggan; Majid Jaberi-Douraki; Tonya M Colpitts Journal: Front Public Health Date: 2018-05-18
Authors: Rebecca C Christofferson; Daniel M Parker; Hans J Overgaard; Jeffrey Hii; Gregor Devine; Bruce A Wilcox; Vu Sinh Nam; Sazaly Abubakar; Sebastien Boyer; Kobporn Boonnak; Stephen S Whitehead; Rekol Huy; Leang Rithea; Tho Sochantha; Thomas E Wellems; Jesus G Valenzuela; Jessica E Manning Journal: PLoS Negl Trop Dis Date: 2020-07-30