Wolbachia prevalence in Aedes aegypti across five comunas of Medellín, Colombia: Implications for post-release surveillance
PLOS Neglected Tropical Diseases·
- DOI
- 10.1371/journal.pntd.0014630
- PMID
- 42574487
- PMCID
- —
- OpenAlex
- W7202128969
- Study type
- Journal article
- Publisher
- Public Library of Science (PLoS)
- Article type
- journal-article
- Integrity
- current
Why this research matters now
The findings demonstrate that Wolbachia appears broadly established in Ae. aegypti populations in the surveyed areas of Medellín following deliberate release for arbovirus control. The work identifies practical surveillance approaches for monitoring Wolbachia-based vector control programs that balance cost and accuracy for long-term assessment of infection persistence.
Structured evidence summary
Research question
The study assessed current Wolbachia prevalence in Aedes aegypti mosquitoes across five administrative areas of Medellín, Colombia, following deliberate release of Wolbachia-infected mosquitoes for arbovirus control. The work compared sampling and molecular detection approaches to identify cost-effective methods for long-term post-release surveillance.
Study design
Field surveillance combining ovitrap collections and direct adult mosquito sampling was conducted across five comunas spanning approximately 32.66 km². Wolbachia infection was detected using conventional PCR on pooled samples and quantitative PCR on individual specimens.
Population and setting
The study surveyed Aedes aegypti populations in five comunas of Medellín, Colombia, covering approximately 32.66 km² in areas where Wolbachia-infected mosquitoes were released between 2017 and 2022 by the World Mosquito Program.
Main findings
Wolbachia infection remained widespread across surveyed areas, with estimated infection frequencies ranging from approximately 60% to near fixation depending on the sampling strategy and molecular detection method used. Conventional PCR screening of pooled adults from ovitraps offered a cost-effective approach for confirming Wolbachia persistence across sites, while quantitative PCR of individual field-captured adults provided more sensitive prevalence estimates.
Public-health relevance
The findings demonstrate that Wolbachia appears broadly established in Ae. aegypti populations in the surveyed areas of Medellín following deliberate release for arbovirus control. The work identifies practical surveillance approaches for monitoring Wolbachia-based vector control programs that balance cost and accuracy for long-term assessment of infection persistence.
Important limitations
This summary relies on the supplied single-article abstract and metadata. Full interpretation of study limitations, sampling representativeness, temporal dynamics, and generalizability to other settings requires review of the complete published paper.
GIDS interpretation
This article is discoverable through dengue disease classification and surveillance topic assignment based on its focus on post-release monitoring of Wolbachia-infected Aedes aegypti in Colombia. The paper addresses methods for tracking a vector control intervention rather than reporting disease incidence or outbreak detection.
Related GIDS surveillance
Literature context does not validate, explain, or change a surveillance signal. Exact and contextual relationships are shown separately.
Evidence relationships
This article has 9 auditable classifier relationships to diseases, places, topics, and study design.