PLoS Neglected Tropical Diseases (Jun 2022)

Zaire ebolavirus surveillance near the Bikoro region of the Democratic Republic of the Congo during the 2018 outbreak reveals presence of seropositive bats.

  • Stephanie N Seifert,
  • Robert J Fischer,
  • Eeva Kuisma,
  • Cynthia Badzi Nkoua,
  • Gerard Bounga,
  • Marc-Joël Akongo,
  • Jonathan E Schulz,
  • Beatriz Escudero-Pérez,
  • Beal-Junior Akoundzie,
  • Vishnou Reize Bani Ampiri,
  • Ankara Dieudonne,
  • Ghislain Dzeret Indolo,
  • Serge D Kaba,
  • Igor Louzolo,
  • Lucette Nathalie Macosso,
  • Yanne Mavoungou,
  • Valchy Bel-Bebi Miegakanda,
  • Rock Aimé Nina,
  • Kevin Tolovou Samabide,
  • Alain I Ondzie,
  • Francine Ntoumi,
  • César Muñoz-Fontela,
  • Jean-Vivien Mombouli,
  • Sarah H Olson,
  • Chris Walzer,
  • Fabien Roch Niama,
  • Vincent J Munster

DOI
https://doi.org/10.1371/journal.pntd.0010504
Journal volume & issue
Vol. 16, no. 6
p. e0010504

Abstract

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On the 8th of May, 2018, an outbreak of Ebola virus disease (EVD) was declared, originating in the Bikoro region of the Democratic Republic of the Congo (DRC) near the border with neighboring Republic of the Congo (ROC). Frequent trade and migration occur between DRC and ROC-based communities residing along the Congo River. In June 2018, a field team was deployed to determine whether Zaire ebolavirus (Ebola virus (EBOV)) was contemporaneously circulating in local bats at the human-animal interface in ROC near the Bikoro EVD outbreak. Samples were collected from bats in the Cuvette and Likouala departments, ROC, bordering the Équateur Province in DRC where the Bikoro EVD outbreak was first detected. EBOV genomic material was not detected in bat-derived samples by targeted quantitative reverse transcription-polymerase chain reaction or by family-level consensus polymerase chain reaction; however, serological data suggests recent exposure to EBOV in bats in the region. We collected serum from 144 bats in the Cuvette department with 6.9% seropositivity against the EBOV glycoprotein and 14.3% seropositivity for serum collected from 27 fruit bats and one Molossinae in the Likouala department. We conclude that proactive investment in longitudinal sampling for filoviruses at the human-animal interface, coupled with ecological investigations are needed to identify EBOV wildlife reservoirs.