Evidence map›Paper›PMID 42623402›Full record

ArticlePLoS neglected tropical diseases2026

Emergence and phylogeography of the dengue vector Aedes aegypti in Southeastern Iran.

Jalil Nejati, Mona Koosha, Nayyereh Choubdar, Sara Rahimy, Hassan Balouch, Mohammad Ali Oshaghi

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Article in PLoS neglected tropical diseases, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

6 authors.

Jalil NejatiHealth Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
Mona KooshaDepartment of Medical Parasitology and Mycology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Nayyereh ChoubdarDepartment of Vector Biology and Control of Diseases, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Sara RahimyDepartment of Vector Biology and Control of Diseases, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Hassan BalouchCenter for Disease Control and Prevention, Health Deputy, Iranshahr University of Medical Sciences, Iranshahr, Iran.
Mohammad Ali OshaghiDepartment of Vector Biology and Control of Diseases, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.ORCID https://orcid.org/0000-0003-3004-0364

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAedes (Stegomyia) aegypti (Linnaeus) is the primary vector of dengue, chikungunya, Zika, and yellow fever viruses. Its recent detection in southeastern Iran raises public health concerns about arbovirus spread to new regions. This study provides the first genetic and phylogeographic analysis of Ae. aegypti populations from Sistan and Baluchistan Province (SBP), Iran, to infer their origin and invasion pathways.

methodsMitochondrial COI and ND4 genes were analysed in newly collected Ae. aegypti specimens from border areas, ports, and urban centres of SBP. Haplotype network analyses were constructed using the TCS method in PopART, and phylogenetic analyses were conducted using global reference sequences.

resultsIranian specimens comprised 7 COI haplotypes (n = 18) and 10 ND4 haplotypes (n = 17). COI phylogeny placed Iranian specimens into two main clades, while ND4 analysis distributed them across several derived clades, mostly clustering with lineages from Latin America (Brazil, Mexico) or Africa. One Iranian specimen showed a close relationship with a Saudi Arabian sequence (bootstrap: 98%) near the basal region. Combined COI + ND4 analysis revealed a monophyletic clade of Iranian specimens with a Sri Lankan specimen, distinct from other global lineages. The global COI network (n = 47) showed a star-like topology with a dominant haplotype 1 shared among 10 Iranian specimens. The ND4 network (n = 31) revealed a complex topology with 18 haplotypes, where a Saudi Arabian and one Iranian specimen (~30 mutational steps) possibly represented the peripheral root.

conclusionsDetection of diverse Ae. aegypti clades confirm establishment of this vector in southeastern Iran. Results support multiple introductions and genetic connectivity with Latin America, Africa, and South Asia, pointing to an emerging invasion corridor. Continued genomic surveillance and integrated vector monitoring are urgently needed to guide prevention strategies.

Indexed as

AedesMosquito VectorsAnimalsDengueDNA, MitochondrialElectron Transport Complex IVGenetic VariationHaplotypesIranNADH DehydrogenasePhylogenyPhylogeographySequence Analysis, DNADNA, MitochondrialElectron Transport Complex IVNADH DehydrogenaseNADH dehydrogenase subunit 4

Identifiers

PMID42623402
PMCPMC13577543

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