Related Experiment Video
Updated: Jul 18, 2026
10:35
Vector Competence Analyses on Aedes aegypti Mosquitoes using Zika Virus
Published on: May 31, 2020
Imported dengue fever in Austria 1990-2005.
14th Medical Department with Infectious Diseases & Tropical Medicine, Kaiser Franz Josef - Hospital, Kundratstrasse 3, A-1100, Vienna, Austria.
Travel Medicine and Infectious Disease
|November 14, 2006
Summary
Imported dengue poses a risk to travelers. This study found common symptoms like fever and fatigue, with laboratory findings including low platelets and white blood cells in imported dengue cases.
Area of Science:
- Tropical Medicine
- Infectious Diseases
- Epidemiology
Background:
- Dengue is a significant arthropod-borne viral disease with increasing global travel.
- Imported dengue cases are frequently observed in non-endemic regions, posing a public health concern.
Purpose of the Study:
- To investigate the epidemiology, clinical features, and laboratory findings of imported dengue cases in Vienna.
- To highlight the importance of considering dengue in febrile travelers returning from endemic areas.
Main Methods:
- Retrospective analysis of medical records of 93 patients diagnosed with imported dengue between 1990 and April 2005.
- Classification of cases as confirmed or probable dengue based on CDC criteria.
- Data collection on patient demographics, travel history, symptoms, and laboratory results.
Main Results:
- The majority of infections were acquired in South East Asia (56%).
- Common symptoms included fever, headache, arthralgia, myalgia, nausea, vomiting, and fatigue.
- Key laboratory findings were thrombocytopenia, leukopenia, and elevated hepatic enzymes. Hemorrhagic manifestations occurred in 18 patients, with 7 meeting dengue hemorrhagic fever criteria.
Conclusions:
- Dengue must be considered in travelers presenting with fever after visiting endemic regions.
- Prompt diagnosis and symptomatic management are crucial for imported dengue cases.
- Effective management can prevent unnecessary and potentially harmful medical interventions.
Related Concept Videos
01:18Yellow 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...
01:25Arboviral Encephalitis
Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
01:29Malaria
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...
01:28Infectious 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...
01:26Rocky Mountain Spotted Fever
Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.