Schmallenberg virus, cyclical reemergence in the core region: A seroepidemiologic study in wild cervids, Belgium, 2012-2017

Calixte Bayrou, Christophe Lesenfants, Julien Paternostre, Rosario Volpe, Nassim Moula, Damien Coupeau, Benoît Muylkens, Daniel Desmecht, Annick Linden

Research output: Contribution to journalArticlepeer-review

Abstract

Schmallenberg virus emerged in 2011 in Europe. The epicentre of primordial spreading was the region straddling Germany, the Netherlands and Belgium. One of the key questions is whether the newcomer would establish a lasting presence on the continent. The apparent seroprevalence in southern Belgium wild deer populations was followed for 6 years. Two years of intense circulation were revealed, 2012 and 2016, characterized by a peak seroprevalence in the two studied populations (Capreolus capreolus and Cervus elaphus). Between the peak years and after 2016, apparent seroprevalences declined rapidly among adults and became nil among juveniles. The general pattern of apparent seroprevalence evolution observed is consistent with a cyclic circulation of Schmallenberg virus, similar to what is observed for other Orthobunyaviruses in endemic areas. These data also suggest that wild cervids play no central role in the circulation dynamics of the virus.

Original languageEnglish
JournalTransboundary and Emerging Diseases
Early online date4 May 2021
DOIs
Publication statusE-pub ahead of print - 4 May 2021

Keywords

  • Belgium
  • Schmallenberg virus
  • reemergence
  • wild cervids

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