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Updated: Jun 24, 2026

Protocol for Dengue Infections in Mosquitoes (A. aegypti) and Infection Phenotype Determination
Published on: July 4, 2007
[Dengue in children: clinical and epidemiological characteristics, Manaus, State of Amazonas, 2006 and 2007]
Lúcia Alves da Rocha1, Pedro Luiz Tauil
1Secretaria Municipal de Saúde, Manaus, AM. lucia.rocha@pmm.am.gov.br
Insights
Dengue cases in Manaus children increased significantly from 2006 to 2007, with a rise in severe dengue forms. Despite more frequent hemorrhagic dengue, the overall mortality rate decreased.
Area of Science:
- Epidemiology
- Infectious Diseases
- Pediatrics
Context:
- Dengue is a significant public health concern, particularly in tropical and subtropical regions.
- Manaus, Brazil, experienced dengue outbreaks in 2006 and 2007.
- Children are a vulnerable population during dengue epidemics.
Purpose:
- To analyze the clinical and epidemiological characteristics of dengue in children in Manaus, Brazil.
- To compare dengue case data between 2006 and 2007.
- To identify trends in dengue severity and serotypes affecting children.
Summary:
- The study analyzed 482 dengue cases in 2006 and 1,538 in 2007, sourced from the National System for Notifiable Diseases (SINAN).
- A statistically significant increase in dengue cases among children under 15 and a rise in severe dengue forms were observed between 2006 and 2007.
- While dengue hemorrhagic fever became more common in 2007, the mortality rate declined. Serotypes DEN-3 (2006) and DEN-1, DEN-2, DEN-3 (2007) were identified.
Impact:
- Findings highlight an increasing burden of dengue in pediatric populations in Manaus.
- The study underscores the importance of monitoring dengue trends and severity in children.
- Results can inform public health strategies for dengue prevention and control in the region.
Abstract:
This study presents the clinical and epidemiological aspects of children affected with dengue, in Manaus, AM, in 2006 and 2007. There were 482 The aim of this study was to present the clinical and epidemiological characteristics of children affected by dengue, in Manaus, State of Amazonas, in 2006 and 2007. Analysis was conducted on 482 dengue cases with confirmation from laboratory tests, in 2006 (46.9% in children under 15 years of age), and 1,538 cases in 2007 (57.7% in children under 15 years of age). The data were obtained from the National System for Notifiable Diseases (Sistema Nacional de Agravos de Notificação; SINAN) in Manaus. The variables analyzed were: age, gender, district where subject lived, month when symptoms started, serotypes and clinical form of the disease. Statistically significant increases in the proportion of cases in children under 15 years of age and in the proportion of severe forms were found between 2006 and 2007. Although the hemorrhagic form was almost three times more frequent in 2007, the mortality rate was lower. The serotypes identified were DEN-3 in 2006 and DEN-1, DEN-2 and DEN-3 in 2007. In 2007, cases were recorded in every month of the year.
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