Salmonella in animals in New Zealand: the past to the future

Salmonella in animals in New Zealand: the past to the future
Peer reviewed


In New Zealand, salmonellosis was first reported in pigs in 1934 when Bacillus suipestifer (Salmonella enterica serovar Choleraesuis) infection was recognised as a common cause of mortality in young pigs raised in unsanitary conditions in the Waikato district (Marshall 1934). A few years later, mild forms of Pullorum disease were reported in young chickens (Bobby 1946) and a bloodtesting programme involving 700 birds revealed a prevalence of 23.3% (Bobby 1941). A 5-year survey by the Animal Research Station at Wallaceville (1941-45) found that Pullorum was the most common disease of poultry, but by 1945, when 110,000 birds were tested, the prevalence had reduced to 9.08%. Over the next 10 years a test and slaughter programme succeeded in reducing the prevalence to 0.39% (Salisbury 1958), but isolated pockets of infection still persisted; it was a further 10 years before the disease was eradicated from commercial flocks (Russell and Kicks 1964). In 1948 and 1949, Salmonella infection was first reported from cattle and sheep, respectively (Josland 1950). The first case of S. Typhimurium infection was…

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