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Abstract
Extract
Within the last ten years, leptospirosis has been recognized in many countries as a serious source of economic loss in livestock and as an important problem in public health. The presence of Leptospir canicola, L. icterohaemorrhagiae, L. hyos, and L. pomona in New Zealand has been established or confirmed by the Diagnostic Labaratory of the Wallaceville Animal Research Station (Annual Report, 1950–51) and Kirschner and his associates (Citation1951, Citation1952, Citation1954). As in the United States, L. pomona appears to be the predominant species (Salisbury and McDonald, Citation1955).