Identification of species composition and dengue virus from Aedes vector at outbreak sites in Central Vietnam, 2018 - 2020

Authors

  • Đinh Quang Nhựt Pasteur Institute in Nha Trang, Khanh Hoa
  • Nguyễn Thị Hải Bình Pasteur Institute in Nha Trang, Khanh Hoa
  • Nguyễn Thành Đông Pasteur Institute in Nha Trang, Khanh Hoa
  • Bùi Thanh Phú Pasteur Insititute in Nha Trang, Khanh Hoa
  • Trịnh Công Thức Pasteur Institute in Nha Trang, Khanh Hoa
  • Nguyễn Xuân Hiếu Pasteur Institute in Nha Trang, Khanh Hoa
  • Hồ Quang Hà Pasteur Institute in Nha Trang, Khanh Hoa
  • Đỗ Thị Di Thiện Pasteur Institute in Nha Trang, Khanh Hoa
  • Lê Xuân Huy Pasteur Institute in Nha Trang, Khanh Hoa
  • Đỗ Thái Hùng Pasteur Institute in Nha Trang, Khanh Hoa
  • Vũ Sinh Nam National Institute of Hygiene and Epidemiology, Hanoi

DOI:

https://doi.org/10.51403/0868-2836/2022/619

Keywords:

Species composition, dengue virus, Aedes mosquitoes, outbreak

Abstract

Identification of species composition and dengue virus’types in mosquitoes plays an important role in vector control and actively prevention of dengue fever outbreak. This study aims to identification of species composition and dengue virus from Aedes vector at outbreak sites in central Vietnam, 2018 - 2020. This
study was conducted to collected mosquito samples from outbreaks in 11 provinces in the Central region from May 2018 to December 2020. Mosquitoes were collected by Backpack machine at outbreak sites. Then the mosquito’s samples were preliminary classificated of species identification, stored in liquid nitrogen and transported to Nha Trang Pasteur Institute for later testing by RT-PCR. A total of 10,984 mosquitoes were collected out of 155 outbreak sites, included Aedes, Culex, Anopheles, Armigeres species; species composition as following 7.392 belong to Aedes sp., accounted for 67.3%, 2.625 were Culex sp., accounted 23.9%, 879 were Anopheles sp. Accounted for 8% and 92 for Armigeres sp. Accounted for 0.8%. Test results from those mosquitoe samples showed only dengue virus types as following 2 DENV4 (0.49%) in Da Nang, 2 DENV4 (0.2%) in Binh Dinh and 1 DENV1 (0.04%) in Khanh Hoa. This is the first study in the Central region on the identification of dengue virus in mosquitoes using RT-PCR technique. Future studies need to continue to monitor dengue virus infection rates in
mosquitoes at outbreak sites in order to control and prevent Dengue more effectively.

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Published

24-05-2022

How to Cite

Nhựt, Đinh Q. ., Bình, N. T. H. ., Đông, N. T. ., Phú, B. T. ., Thức, T. C. ., Hiếu, N. X. ., Hà, H. Q. ., Thiện, Đỗ T. D. ., Huy, L. X. ., Hùng, Đỗ T. ., & Nam, V. S. . (2022). Identification of species composition and dengue virus from Aedes vector at outbreak sites in Central Vietnam, 2018 - 2020. Vietnam Journal of Preventive Medicine, 32(2 Phụ bản), 142–149. https://doi.org/10.51403/0868-2836/2022/619

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