SalmonellaBrandenburg — emergence of a variant strain on a sheep farm in the South Island of New Zealand

Abstract
Salmonella Brandenburg was initially diagnosed in New Zealand in an aborted ewe from a Merino flock in mid-Canterbury in 1996. The following year, the disease occurred on farms in midCanterbury and on one farm near Winton in Southland (Bailey 1997 Bailey, KM . 1997. Sheep abortion outbreak associated with Salmonella Brandenburg. Surveillance, 24(4): 10–11. [Google Scholar] ). Since then, this bacterium has caused widespread abortion and deaths in pregnant ewes in Southland, coastal Otago and south- and mid-Canterbury. In cattle, the same organism has caused diarrhoea and dysentery in calves and adult cattle, and abortions and deaths in first-calving cows and to a lesser extent in second-calving and older cows (Clark et al, in press). Salmonella Brandenburg has also caused diarrhoea and fetal deaths in dogs, and diarrhoea and deaths in foals.

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