The first report of Histophilus somni pneumonia in Nigerian dairy cattle

Histophilus somni-induced infections in cattle from southern Brazil

“…Although H. somni-related diseases are of economic importance to livestock owners (George 2009), clinical manifestations of disease in cattle is predominant within the USA (Fecteau and George 2004;Woolums et al 2009) and Canada (Van Donkersgoed et al 1990;Gagea et al 2006), with reports of sporadic outbreaks occurring in Europe (Tegtmeier et al 1999;Janosi et al 2009b), Argentina (Descarga et al 2002), Nigeria (Odugbo et al 2009), Japan (Momotani et al 1985;Tanaka et al 2005), and South Africa (Last et al 2001); there is no description of this pathogen affecting cattle in Brazil. Nevertheless, H. somni has also been isolated from healthy goats in Mexico (Perez-Romero et al 2011) and Hungary (Janosi et al 2009a) and has been associated TME in sheep within Europe (Cassidy et al 1997), reproductive disease in sheep from Canada (Lees et al 1990), and in one case of endometritis in a sheep from Brazil (Rizzo et al 2012).…”

Histophilus somni is a potential threat to beef cattle feedlots in Brazil

“…Histophilosis is a major problem of cattle in North America (George 2009), with sporadic descriptions in Hungary (Janosi and others 2009), the UK (Wessels and Wessels 2005), Argentina (Descarga and others 2002), Nigeria (Odugbo and others 2009) and South Africa (Last and others 2001). Recently, we have described H. somni -induced infections in several cattle herds from Paraná State, southern Brazil (Headley and others 2013, Headley and others 2014a), and have speculated that the disease might be more prevalent than previously estimated.…”

“…Histophilus somni (previously known as Haemophilus somnus ) is a Gram‐negative bacterium that causes histophilosis in ruminants which is manifested as several clinical syndromes including bronchopneumonia, thrombotic meningoencephalitis (TME), pleuritis, polysynovitis, septicaemia, myocarditis, infertility, abortion and mastitis (Divers 2008, Pérez and others 2010). Histophilosis is a major problem of cattle in North America (George 2009), with sporadic descriptions in Hungary (Janosi and others 2009), the UK (Wessels and Wessels 2005), Argentina (Descarga and others 2002), Nigeria (Odugbo and others 2009) and South Africa (Last and others 2001). Recently, we have described H. somni ‐induced infections in several cattle herds from Paraná State, southern Brazil (Headley and others 2013, Headley and others 2014a), and have speculated that the disease might be more prevalent than previously estimated.…”