Discovery of super–insecticide-resistant dengue mosquitoes in Asia: Threats of concomitant knockdown resistance mutations

Author:

Kasai Shinji1ORCID,Itokawa Kentaro1ORCID,Uemura Nozomi1ORCID,Takaoka Aki1ORCID,Furutani Shogo1,Maekawa Yoshihide1,Kobayashi Daisuke1ORCID,Imanishi-Kobayashi Nozomi1,Amoa-Bosompem Michael1ORCID,Murota Katsunori2ORCID,Higa Yukiko1,Kawada Hitoshi3ORCID,Minakawa Noboru3,Cuong Tran Chi4ORCID,Yen Nguyen Thi4,Phong Tran Vu4,Keo Sath5,Kang Kroesna5ORCID,Miura Kozue6ORCID,Ng Lee Ching78ORCID,Teng Hwa-Jen9,Dadzie Samuel10,Subekti Sri11ORCID,Mulyatno Kris Cahyo11ORCID,Sawabe Kyoko1,Tomita Takashi1ORCID,Komagata Osamu1ORCID

Affiliation:

1. Department of Medical Entomology, National Institute of Infectious Diseases, Tokyo 162-8640, Japan.

2. Kagoshima Research Station, National Institute of Animal Health, National Agriculture and Food Research Organization, Kagoshima 891-0105, Japan.

3. Department of Vector Ecology and Environment, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan.

4. Medical Entomology and Zoology Department, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam.

5. Faculty of Veterinary Medicine, Royal University of Agriculture, P.O. Box 2696, Phnom Penh, Cambodia.

6. Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo 113-8657, Japan.

7. Environmental Health Institute, National Environment Agency, Singapore 138667, Singapore.

8. School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore.

9. Center for Diagnostics and Vaccine Development, Centers for Disease Control, Ministry of Health and Welfare, Taipei City 10050, Taiwan.

10. Department of Parasitology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon,, Ghana.

11. Entomology Study Group, Institute of Tropical Disease, Universitas Airlangga, Surabaya 60115, Indonesia.

Abstract

Aedes aegypti (Linnaeus, 1762) is the main mosquito vector for dengue and other arboviral infectious diseases. Control of this important vector highly relies on the use of insecticides, especially pyrethroids. The high frequency (>78%) of the L982W substitution was detected at the target site of the pyrethroid insecticide, the voltage-gated sodium channel (Vgsc) of A. aegypti collected from Vietnam and Cambodia. Alleles having concomitant mutations L982W + F1534C and V1016G + F1534C were also confirmed in both countries, and their frequency was high (>90%) in Phnom Penh, Cambodia. Strains having these alleles exhibited substantially higher levels of pyrethroid resistance than any other field population ever reported. The L982W substitution has never been detected in any country of the Indochina Peninsula except Vietnam and Cambodia, but it may be spreading to other areas of Asia, which can cause an unprecedentedly serious threat to the control of dengue fever as well as other Aedes -borne infectious diseases.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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