The Makona Variant of Ebola Virus Is Highly Lethal to Immunocompromised Mice and Immunocompetent Ferrets

J Infect Dis. 2018 Nov 22;218(suppl_5):S466-S470. doi: 10.1093/infdis/jiy141.

Abstract

During 2013-2016, a novel isolate of Ebola virus (EBOV-Makona) caused an epidemic in West Africa. The virus was distinct from known EBOV strains (EBOV-Kikwit and EBOV-Mayinga), which were responsible for previous outbreaks in Central Africa. To investigate the pathogenicity of EBOV-Makona, we engineered and rescued an early isolate (H.sapiens-wt/GIN/2014/Makona-Gueckedou-C07, called rgEBOV-C07) using an updated reverse-genetics system. rgEBOV-C07 was found to be highly pathogenic in both the knockout mouse and ferret models, with median lethal dose values of 0.078 and 0.015 plaque-forming units, respectively. Therefore, these animals are appropriate for screening potential countermeasures against EBOV-Makona without the need for species adaptation.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Ebolavirus / genetics
  • Ebolavirus / pathogenicity*
  • Female
  • Ferrets
  • Immunocompetence
  • Immunocompromised Host
  • Male
  • Mice
  • Mice, Knockout