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Updated: Jun 18, 2026
A Multi-detection Assay for Malaria Transmitting Mosquitoes
Published on: February 28, 2015
Multiplex PCR assays developed for neglected pathogen detection in undifferentiated acute febrile illness cases in
Leidi Carvajal Aristizabal1, Karl Ciuoderis1, Laura S Pérez-Restrepo1
1Universidad Nacional de Colombia, Global Health Institute - One Health Colombia and One Health Genomic Laboratory, Medellín, Colombia.
Background:
Undifferentiated acute febrile illness (UAFI) cause by several pathogens poses a diagnostic challenge due to the similarity on the clinical manifestations across these diseases. Precise pathogen detection is vital for appropriate medical intervention, early treatment, and timely outbreak alerts regarding emerging pathogens. In tropical regions, UAFI is predominantly linked to a wide range of viral, bacterial, and parasitic infections. Hence, confirmatory laboratory tests are essential for specific pathogen identification.
Objectives:
Our primary goal was to develop two real-time multiplex polymerase chain reaction (PCR) assays for simultaneous detection of six neglected pathogens (Leptospira spp., Rickettsia spp., Borrelia spp., Anaplasma spp., Brucella spp., and Bartonella spp.), known for causing UAFI in tropical regions.
Methods:
We rigorously assessed assays parameters including: linearity, efficiency, sensitivity, and reproducibility in both singleplex and multiplex formats.
Findings:
Our results demonstrated that these multiplex assays are reliable and sensitive methods. They showed good performance with low intra- and inter-variability (< 10%) and consistently high efficiencies (> 90%).
Main Conclusions:
These assays offer the alternative of streamlining work, reducing processing costs, and minimizing sample volume use. In conclusion, we present two dependable, user-friendly, rapid, and cost-effective methods for simultaneously detecting six neglected bacteria, as a significant laboratory tool in resource-limited tropical settings.
Insights
New real-time multiplex PCR assays reliably detect six neglected tropical bacteria causing undifferentiated acute febrile illness (UAFI). These cost-effective methods improve diagnostics in resource-limited settings.
Area of Science:
- Molecular diagnostics
- Infectious disease research
- Tropical medicine
Background:
- Undifferentiated acute febrile illness (UAFI) presents diagnostic challenges due to similar symptoms across various pathogens.
- Accurate pathogen identification is crucial for effective treatment and outbreak detection, especially in tropical regions.
- UAFI in the tropics is often caused by diverse viral, bacterial, and parasitic infections, necessitating reliable laboratory confirmation.
Purpose of the Study:
- To develop two real-time multiplex polymerase chain reaction (PCR) assays.
- To enable simultaneous detection of six neglected pathogens: Leptospira spp., Rickettsia spp., Borrelia spp., Anaplasma spp., Brucella spp., and Bartonella spp.
- To address UAFI diagnostics in tropical regions.
Main Methods:
- Development and validation of two real-time multiplex PCR assays.
- Assessment of assay parameters including linearity, efficiency, sensitivity, and reproducibility.
- Evaluation in both singleplex and multiplex formats.
Main Results:
- The developed multiplex PCR assays demonstrated reliability and high sensitivity.
- Assays exhibited excellent performance with low intra- and inter-variability (< 10%).
- Consistently high efficiencies (> 90%) were achieved for pathogen detection.
Conclusions:
- The assays streamline laboratory workflows, reduce costs, and minimize sample volume.
- Two dependable, user-friendly, rapid, and cost-effective methods for simultaneous detection of six neglected bacteria are presented.
- These multiplex PCR assays serve as a significant laboratory tool for UAFI diagnostics in resource-limited tropical settings.
