[Clinical and epidemiological aspects of the dengue epidemic in Recife, PE, 2002]

Demetrius Montenegro1, Heloisa Ramos Lacerda, Tereza Maciel Lira

  • 1Diretoria de Vigilância Epidemiológica, Secretaria Municipal de Saúde, Recife, PE.

Insights

This study on the 2002 Recife dengue epidemic found Dengue serotype 3 (Den-3) predominated. Vascular collapse (shock) was the primary cause of death in most fatal cases, often without major bleeding.

Area of Science:

  • Virology
  • Epidemiology
  • Pathology

Context:

  • The 2002 dengue epidemic in Recife, Brazil, resulted in significant mortality.
  • Understanding the clinical and pathological features of fatal dengue cases is crucial for public health interventions.

Purpose:

  • To analyze the clinical, laboratorial, and necropsy findings of 14 patients who died during the 2002 dengue epidemic in Recife.
  • To identify the predominant dengue serotype and the main causes of death.

Summary:

  • Dengue serotype 3 (Den-3) was detected in 76.3% of fatal cases.
  • Deaths predominantly occurred in men over 20 years old, around the 11th day of illness, often in private hospitals.
  • Vascular collapse (shock) was observed in 85.7% of cases and identified as the main cause of death, irrespective of major bleeding. Hepatitis with elevated transaminases was common, usually without jaundice.
  • Average hematocrit was 40.7% and platelet count was 56,313 p/mm3.

Impact:

  • Findings highlight vascular collapse as a critical factor in dengue mortality, emphasizing the need for early shock management strategies.
  • The study provides valuable data for refining clinical guidelines and public health responses to severe dengue hemorrhagic fever.

Related Concept Videos

Infectious Diseases and Their Occurrence01:28

Infectious Diseases and Their Occurrence

Infectious diseases appear in populations through various transmission patterns, influenced by pathogen characteristics, population immunity, environmental conditions, and social behavior. Understanding these patterns is essential for effective public health surveillance and intervention. These categories—sporadic, outbreak, epidemic, pandemic, and endemic—help frame the nature and scope of disease events.Sporadic diseases occur irregularly and infrequently, without a predictable temporal or...
Yellow Fever01:18

Yellow Fever

Yellow fever is a viral hemorrhagic disease caused by the yellow fever virus (YFV), a member of the Flaviviridae family. It is transmitted primarily by Aedes and Haemagogus mosquitoes in tropical and subtropical regions of Africa and South America. After transmission through a mosquito bite, the virus initially replicates in skin-resident immune cells such as dendritic cells and macrophages. These cells then migrate to the lymph nodes, where viral replication increases, eventually leading to...
Investigation of Disease Outbreaks01:23

Investigation of Disease Outbreaks

Multistate foodborne outbreaks pose significant public health risks and require meticulous investigation to identify sources and implement control measures. The Centers for Disease Control and Prevention (CDC) utilizes a dynamic seven-step process for these investigations, integrating data from laboratories, interviews, and environmental assessments to protect public health.Outbreak Detection: The detection of multistate outbreaks typically begins with PulseNet, the CDC's national laboratory...
Malaria01:29

Malaria

Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...
Principles of Disease Surveillance01:26

Principles of Disease Surveillance

Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
Prevalence and Incidence01:08

Prevalence and Incidence

In statistical epidemiology and health sciences, two essential metrics—prevalence and incidence—are fundamental for understanding disease dynamics within a population. These measures enable public health officials, epidemiologists, and researchers to assess the burden of diseases, allocate resources effectively, and design impactful public health policies and interventions.
Prevalence indicates the proportion of individuals in a population who have a specific disease or health condition at a...