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<p>The global resurgence of <i>Aedes</i>-borne arboviruses (dengue, chikungunya, and Zika) underscores the need for innovative vector control strategies. In Iran—a region at risk for arbovirus emergence due to invasive <i>Aedes albopictus</i> and <i>Ae. aegypti</i> mosquitoes— we investigated the natural occurrence of <i>Wolbachia</i> infections. Screening of field-collected and laboratory-reared mosquitoes revealed the presence of two <i>Wolbachia</i> strains: <i>w</i>AlbB in <i>Ae. albopictus</i> and <i>w</i>Pip in <i>Ae. aegypti</i>. Notably, detection of <i>w</i>Pip in the wild <i>Ae. aegypti</i> represents a potential first report globally, as this species has been historically considered uninfected in natural populations. <i>Wolbachia</i> prevalence was significantly higher in laboratory-reared mosquitoes and <i>Ae. albopictus</i>. Multivariable analysis confirmed that <i>Ae. aegypti</i> had significantly lower odds of <i>Wolbachia</i> infection compared to <i>Ae. albopictus</i> (adjusted OR = 0.12, 95% CI: 0.03–0.45, <i>p</i> = 0.002), and infection odds were also significantly lower in field-collected mosquitoes from Guilan (OR = 0.28), Mazandaran (OR = 0.05), and Hormozgan (OR = 0.14) provinces relative to insectary-reared specimens (all <i>p</i> &lt; 0.05). These findings provide critical baseline data for evaluating the feasibility of <i>Wolbachia</i>-based interventions in Iran, where invasive <i>Aedes</i> populations could facilitate arbovirus transmission. This study highlights the importance of characterizing native <i>Wolbachia</i> infections to inform future biocontrol strategies against emerging mosquito-borne diseases.</p>

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Natural infection of Aedes albopictus with the wAlbB strain and Ae. aegypti with the wPip strain of Wolbachia in Iran

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月21日

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  • Fateh Karimian,
  • Sara Rahimy,
  • Hemn Yousefi,
  • Mostafa Salehi-Vaziri,
  • Abbasali Raz,
  • Mohammad Hassan Pouriayevali,
  • Eslam Moradi-Asl,
  • Naseh Maleki-Ravasan

摘要

The global resurgence of Aedes-borne arboviruses (dengue, chikungunya, and Zika) underscores the need for innovative vector control strategies. In Iran—a region at risk for arbovirus emergence due to invasive Aedes albopictus and Ae. aegypti mosquitoes— we investigated the natural occurrence of Wolbachia infections. Screening of field-collected and laboratory-reared mosquitoes revealed the presence of two Wolbachia strains: wAlbB in Ae. albopictus and wPip in Ae. aegypti. Notably, detection of wPip in the wild Ae. aegypti represents a potential first report globally, as this species has been historically considered uninfected in natural populations. Wolbachia prevalence was significantly higher in laboratory-reared mosquitoes and Ae. albopictus. Multivariable analysis confirmed that Ae. aegypti had significantly lower odds of Wolbachia infection compared to Ae. albopictus (adjusted OR = 0.12, 95% CI: 0.03–0.45, p = 0.002), and infection odds were also significantly lower in field-collected mosquitoes from Guilan (OR = 0.28), Mazandaran (OR = 0.05), and Hormozgan (OR = 0.14) provinces relative to insectary-reared specimens (all p < 0.05). These findings provide critical baseline data for evaluating the feasibility of Wolbachia-based interventions in Iran, where invasive Aedes populations could facilitate arbovirus transmission. This study highlights the importance of characterizing native Wolbachia infections to inform future biocontrol strategies against emerging mosquito-borne diseases.