Natural vertical cotransmission of Dengue virus and Chikungunya virus from Aedes aegypti in Brumado, Bahia, Brazil

Rev Soc Bras Med Trop. 2022 Aug 22:55:e0427. doi: 10.1590/0037-8682-0427-2021. eCollection 2022.

Abstract

Background: Arthropod-borne viruses have recently emerged and are pathogens of various human diseases, including dengue, zika, and chikungunya viruses.

Methods: We collectedAedes aegyptilarvae (N = 20) from Brumado, Bahia, Brazil, and treated and individually preserved the specimens. We analyzed the samples for dengue, zika, and chikungunya viruses using molecular biology methods.

Results: We found that 25% (N = 5) and 15% (N = 3) were positive exclusively for dengue and chikungunya viruses, respectively; 15% (N = 3) were coinfected with both.

Conclusions: This is the first report of dengue and chikungunya virus coinfection in A. aegypti larvae.

MeSH terms

  • Aedes*
  • Animals
  • Brazil
  • Chikungunya Fever*
  • Chikungunya virus* / genetics
  • Dengue Virus* / genetics
  • Dengue*
  • Humans
  • Mosquito Vectors
  • Zika Virus Infection*
  • Zika Virus*