Competence of Aedes aegypti, Ae. albopictus, and Culex quinquefasciatus Mosquitoes as Zika Virus Vectors, China

Emerg Infect Dis. 2017 Jul;23(7):1085-1091. doi: 10.3201/eid2307.161528. Epub 2017 Jul 15.

Abstract

In China, the prevention and control of Zika virus disease has been a public health threat since the first imported case was reported in February 2016. To determine the vector competence of potential vector mosquito species, we experimentally infected Aedes aegypti, Ae. albopictus, and Culex quinquefasciatus mosquitoes and determined infection rates, dissemination rates, and transmission rates. We found the highest vector competence for the imported Zika virus in Ae. aegypti mosquitoes, some susceptibility of Ae. albopictus mosquitoes, but no transmission ability for Cx. quinquefasciatus mosquitoes. Considering that, in China, Ae. albopictus mosquitoes are widely distributed but Ae. aegypti mosquito distribution is limited, Ae. albopictus mosquitoes are a potential primary vector for Zika virus and should be targeted in vector control strategies.

Keywords: Aedes aegypti; Aedes albopictus; China; Culex quinquefasciatus; Zika virus; mosquitoes; vector competence; vector-borne infections; viruses.

MeSH terms

  • Aedes / virology*
  • Animals
  • Cell Line
  • China / epidemiology
  • Culex / virology*
  • Female
  • Insect Vectors / virology*
  • RNA, Viral
  • Viral Load
  • Virus Replication
  • Zika Virus Infection / epidemiology*
  • Zika Virus Infection / transmission*
  • Zika Virus* / genetics

Substances

  • RNA, Viral