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Peer-reviewedCC BY 4.0The American Journal of Tropical Medicine and Hygiene

Low Generation Culex quinquefasciatus from Texas and Culex pipiens from New Jersey Are Incompetent Vectors for Oropouche Virus

  • Erik Turner1,2
  • Nicole Foley1
  • Casey Parker-Crockett1
  • Linda Kothera1
  • Emily Davis1
  • Matylda Lally1
  • Cassandra Durden1
  • Joan L. Kenney1
  1. 1Division of Vector Borne Disease, Centers for Disease Control and Prevention, Fort Collins, Colorado, USA
  2. 2Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee, USA
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Abstract

During the 2024 Oropouche virus (OROV) outbreak in South America, mosquito surveillance led to the identification of pools of Culex quinquefasciatus infected with the virus. Because of the outbreak strain’s status as a novel reassortment and the novel sequela discovered during this outbreak, concerns arose about Culex species as potential vectors in the continental United States. To assess the risk posed by Cx. quinquefasciatus and the closely related species Culex pipiens, the vector competence of mosquitoes reared from eggs collected in Dallas, TX, and New Jersey was examined. Three replicates of an infectious bloodmeal were offered to Cx. quinquefasciatus at generations F2, F4, and F9, resulting in 0/305 individuals with midgut infections. One infectious bloodmeal was offered to Cx. pipiens at generation F4, with 0/120 resulting midgut infections. These data, which align with other recent publications, indicate that United States populations of Cx. quinquefasciatus and Cx. pipiens are not competent vectors of the outbreak strain of OROV.

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Cite

BibTeXRIS
BibTeX
@article{turner2026generation,
  title = {{Low Generation Culex quinquefasciatus from Texas and Culex pipiens from New Jersey Are Incompetent Vectors for Oropouche Virus}},
  author = {Erik Turner and Nicole Foley and Casey Parker-Crockett and Linda Kothera and Emily Davis and Matylda Lally and Cassandra Durden and Joan L. Kenney},
  journal = {The American Journal of Tropical Medicine and Hygiene},
  year = {2026},
  month = sep,
  doi = {10.4269/ajtmh.26-0251},
  url = {https://doi.org/10.4269/ajtmh.26-0251},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Low Generation Culex quinquefasciatus from Texas and Culex pipiens from New Jersey Are Incompetent Vectors for Oropouche Virus
AU  - Erik Turner
AU  - Nicole Foley
AU  - Casey Parker-Crockett
AU  - Linda Kothera
AU  - Emily Davis
AU  - Matylda Lally
AU  - Cassandra Durden
AU  - Joan L. Kenney
PY  - 2026
DA  - 2026/09/10
JO  - The American Journal of Tropical Medicine and Hygiene
DO  - 10.4269/ajtmh.26-0251
UR  - https://doi.org/10.4269/ajtmh.26-0251
AB  - During the 2024 Oropouche virus (OROV) outbreak in South America, mosquito surveillance led to the identification of pools of Culex quinquefasciatus infected with the virus. Because of the outbreak strain’s status as a novel reassortment and the novel sequela discovered during this outbreak, concerns arose about Culex species as potential vectors in the continental United States. To assess the risk posed by Cx. quinquefasciatus and the closely related species Culex pipiens, the vector competence of mosquitoes reared from eggs collected in Dallas, TX, and New Jersey was examined. Three replicates of an infectious bloodmeal were offered to Cx. quinquefasciatus at generations F2, F4, and F9, resulting in 0/305 individuals with midgut infections. One infectious bloodmeal was offered to Cx. pipiens at generation F4, with 0/120 resulting midgut infections. These data, which align with other recent publications, indicate that United States populations of Cx. quinquefasciatus and Cx. pipiens are not competent vectors of the outbreak strain of OROV.
SN  - 0002-9637
SN  - 1476-1645
ER  -