Affordable Access

deepdyve-link
Publisher Website

Serological evidence of exposure to ebolaviruses in domestic pigs from Guinea.

Authors
  • Fischer, Kerstin1
  • Camara, Alimou2
  • Troupin, Cécile2
  • Fehling, Sarah K3
  • Strecker, Thomas3
  • Groschup, Martin H1
  • Tordo, Noel2
  • Diederich, Sandra1
  • 1 Friedrich-Loeffler-Institut, Institute of Novel and Emerging Infectious Diseases, Greifswald - Insel Riems, Germany. , (Germany)
  • 2 Institut Pasteur de Guineé, Conakry, Guinea. , (Guinea)
  • 3 Institute of Virology, Philipps University of Marburg, Marburg, Germany. , (Germany)
Type
Published Article
Journal
Transboundary and emerging diseases
Publication Date
Mar 01, 2020
Volume
67
Issue
2
Pages
724–732
Identifiers
DOI: 10.1111/tbed.13391
PMID: 31627257
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The genus Ebolavirus comprises several virus species with zoonotic potential and varying pathogenicity for humans. Ebolaviruses are considered to circulate in wildlife with occasional spillover events into the human population which then often leads to severe disease outbreaks. Several studies indicate a significant role of bats as reservoir hosts in the ebolavirus ecology. However, pigs from the Philippines have been found to be naturally infected with Reston virus (RESTV), an ebolavirus that is thought to only cause asymptomatic infections in humans. The recent report of ebolavirus-specific antibodies in pigs from Sierra Leone further supports natural infection of pigs with ebolaviruses. However, susceptibility of pigs to highly pathogenic Ebola virus (EBOV) was only shown under experimental settings and evidence for natural infection of pigs with EBOV is currently lacking. Between October and December 2017, we collected 308 serum samples from pigs in Guinea, West Africa, and tested for the presence of ebolavirus-specific antibodies with different serological assays. Besides reactivity to EBOV nucleoproteins in ELISA and Western blot for 19 (6.2%) and 13 (4.2%) samples, respectively, four sera recognized Sudan virus (SUDV) NP in Western blot. Furthermore, four samples specifically detected EBOV or SUDV glycoprotein (GP) in an indirect immunofluorescence assay under native conditions. Virus neutralization assay based on EBOV (Mayinga isolate) revealed five weakly neutralizing sera. The finding of (cross-) reactive and weakly neutralizing antibodies suggests the exposure of pigs from Guinea to ebolaviruses or ebola-like viruses with their pathogenicity as well as their zoonotic potential remaining unknown. Future studies should investigate whether pigs can act as an amplifying host for ebolaviruses and whether there is a risk for spillover events. © 2019 The Authors. Transboundary and Emerging Diseases published by Blackwell Verlag GmbH.

Report this publication

Statistics

Seen <100 times