Related Experiment Video
Updated: Jul 6, 2026

06:18
Multiplexed Isothermal Amplification Based Diagnostic Platform to Detect Zika, Chikungunya, and Dengue 1
Published on: March 13, 2018
Dengue virus type 4, Manaus, Brazil
Regina Maria Pinto de Figueiredo1, Felipe Gomes Naveca, Michele de Souza Bastos
1Fundação de Medicina Tropical do Amazonas, Manaus, Brazil. regina68@ig.com.br
Emerging Infectious Diseases
|April 9, 2008
Summary
Dengue virus type 4 (DENV-4) has been detected in Amazonas, Brazil. This finding highlights the presence of DENV-4 and co-infections in the region.
Area of Science:
- Virology
- Infectious Diseases
- Public Health
Background:
- Dengue virus (DENV) is a significant global health concern.
- DENV-4 is one of the four serotypes of the dengue virus.
- Surveillance of DENV serotypes is crucial for disease control.
Purpose of the Study:
- To report the detection of dengue virus type 4 (DENV-4) in Amazonas, Brazil.
- To document cases of DENV-4 infection in patients from Manaus.
Main Methods:
- Isolation of virus from patient serum samples.
- Confirmation using serologic and molecular diagnostic tests.
Main Results:
- Dengue virus type 4 (DENV-4) was isolated from three patients in Manaus, Amazonas, Brazil.
- All three cases were confirmed through serological and molecular analyses.
- One patient presented a co-infection with dengue virus type 3 (DENV-3) and DENV-4.
Conclusions:
- DENV-4 is circulating in Amazonas, Brazil.
- The findings underscore the importance of ongoing DENV surveillance in the region.
- Co-infections with different DENV serotypes can occur, potentially complicating clinical management.
Related Concept Videos
Arboviral 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...
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...
American Trypanosomiasis
Chagas disease, or American trypanosomiasis, is a vector-borne parasitic infection caused by Trypanosoma cruzi, a flagellated protozoan (kinetoplastid) of the family Trypanosomatidae. The disease is endemic in Latin America, although cases are increasingly reported worldwide due to human migration. Transmission most commonly occurs when feces of infected triatomine bugs contaminate bite wounds or mucosal surfaces; additional routes include congenital, transfusional, transplant-related, and oral...
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...
