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Trends in dengue diagnosis.
F R R Teles1, D M F Prazeres, J L Lima-Filho
1Laboratório de Imunopatologia Keizo-Asami (LIKA), Universidade Federal de Pernambuco, Av. Prof. Moraes Rego 1235, Campus Universitário, Cidade Universitária, Recife, PE-CEP: 50670-901, Brazil.
Reviews in Medical Virology
|January 27, 2005
Summary
Accurate dengue virus diagnosis is challenging due to limitations in traditional methods like viral isolation and serology. Emerging biosensor technologies offer rapid, sensitive detection but require further validation for reliable dengue diagnostics.
Area of Science:
- Virology
- Immunology
- Biotechnology
Background:
- Conventional dengue diagnosis relies on viral isolation, molecular detection (RNA, antigens), or serology.
- Viral isolation is conclusive but time-consuming and resource-intensive.
- Serological methods are simpler but lack accuracy in early or secondary dengue infections due to timing and cross-reactivity.
Purpose of the Study:
- To review current and emerging techniques for dengue virus diagnosis.
- To evaluate the advantages and limitations of various diagnostic approaches.
Main Methods:
- Review of established diagnostic methods: viral isolation, antigen detection, serology, and PCR-based techniques (RT-PCR).
- Exploration of novel biosensor technologies for dengue antibody and RNA detection.
- Analysis of sensitivity, specificity, speed, and technical requirements of each method.
Main Results:
- Traditional methods have significant drawbacks for early and accurate dengue diagnosis.
- PCR techniques offer speed and specificity but face contamination and technological hurdles.
- Biosensor-based diagnostics show promise for rapid, sensitive, and serotype-specific detection but need standardization and validation.
Conclusions:
- No single dengue diagnostic method is currently ideal, with trade-offs in speed, accuracy, and resources.
- Biosensor technology represents a promising future direction for dengue diagnostics.
- Further validation and standardization are crucial for the widespread adoption of new dengue diagnostic tools.