Nocardial infections of animals in New Zealand, 1976–78

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Abstract
Nocardiaspecies that are common in the soil environment can cause disease in man and animals. These infections are usually considered rare, and there have been only four cases of animal disease previously reported in the New Zealand literature. A limited survey, with the co-operation of staff from animal health laboratories, revealed a further 34 cases of Nocardia infection between 1976–78, and this figure is likely to be conservative. Twenty-six cases were mastitic infections and one was an isolate from a bovine placenta; the majority of infected animals were reported from the South Auckland and Waikato regions. The remaining cases were fatal infections of cats, dogs and a seal. Diagnostic tests on the causative organisms from 27 cases for which cultures were available all proved to be N. asteroides strains. Improved epidemiological data may help relate occurrence of disease in animals to the distribution of Nocardia in nature, but this is dependent on recognition of the organism by the specialists involved in the field and laboratory. Without epidemiological data, it will not be possible to evaluate the effects on animals of increasing the multiplication of Nocardia, for example by adding sewage sludge to soil.

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