RESUMO
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.
Assuntos
Infecções por Bunyaviridae , Cervos , Orthobunyavirus , Animais , Bélgica/epidemiologia , Infecções por Bunyaviridae/epidemiologia , Infecções por Bunyaviridae/veterinária , Estudos SoroepidemiológicosRESUMO
In September 2018, African swine fever in wild boars was detected in Belgium. We used African swine fever-infected spleen samples to perform a phylogenetic analysis of the virus. The causative strain belongs to genotype II, and its closest relatives are viruses previously isolated in Ukraine, Belarus, Estonia, and European Russia.
Assuntos
Vírus da Febre Suína Africana/classificação , Febre Suína Africana/virologia , Vírus da Febre Suína Africana/genética , Vírus da Febre Suína Africana/isolamento & purificação , Animais , Bélgica , Genótipo , Filogenia , Filogeografia , Alinhamento de Sequência/veterinária , Sus scrofa , SuínosAssuntos
Doenças Transmissíveis Emergentes/veterinária , Vírus da Cinomose Canina/isolamento & purificação , Cinomose/epidemiologia , Raposas/virologia , Guaxinins/virologia , Animais , Bélgica/epidemiologia , Doenças Transmissíveis Emergentes/virologia , Cinomose/virologia , Vírus da Cinomose Canina/genética , Reação em Cadeia da Polimerase/veterinária , RNA Viral/isolamento & purificaçãoRESUMO
BACKGROUND: Anaplasma phagocytophilum is a tick-borne pathogen of veterinary and human importance. Both ticks as vectors and vertebrates as reservoir hosts are essential for the cycle maintenance of this bacterium. Currently, the whole range of animal species reservoirs for A. phagocytophilum in natural environment is still unknown. Therefore, the aim of this study was to estimate the prevalence of infection with A. phagocytophilum in the wild boar population in southern Belgium. RESULTS: In the frame of a targeted surveillance program, 513 wild boars were sampled during the hunting season 2011. A nested 16S rRNA PCR was used to screen the presence of A. phagocytophilum DNA in spleen of boars. Within 513 samples, 5 (0,97%) were tested PCR positive and identification was confirmed by sequencing. CONCLUSIONS: This study gives the first insight of presence of A. phagocytophilum in wild boars in southern Belgium.
Assuntos
Anaplasma phagocytophilum , Animais Selvagens/microbiologia , Ehrlichiose/veterinária , Doenças dos Suínos/microbiologia , Anaplasma phagocytophilum/genética , Animais , Bélgica/epidemiologia , Reservatórios de Doenças/microbiologia , Ehrlichiose/epidemiologia , Ehrlichiose/microbiologia , Feminino , Masculino , Reação em Cadeia da Polimerase/veterinária , Prevalência , RNA Ribossômico 16S/genética , Sus scrofa/microbiologia , Suínos , Doenças dos Suínos/epidemiologiaRESUMO
Schmallenberg virus was detected in cattle and sheep in northwestern Europe in 2011. To determine whether wild ruminants are also susceptible, we measured antibody seroprevalence in cervids (roe deer and red deer) in Belgium in 2010 and 2011. Findings indicated rapid spread among these deer since virus emergence ≈250 km away.