Leptospirosis in animals in West Malaysia.
نویسنده
چکیده
INTRODUCTION Leptospirosis in man and animals i s caused by the pathogenic species Leptospira interrogans and i s characterised by a variety of syndromes. The pathogenic L. interrogans encompasses over a hundred serotypes which are grouped under 18 serogroups on the basis of their antigenic characteristics. Pathogenic leptospires occur naturally in a wide variety of wild and domesticated animals throughout the world and i s probably the most widely prevalent zoonoses(1). Natural reservoirs of infection are rodents and a large variety of other feral and domestic animals. Many serotypes occur predominantly in select mammalian hosts; however, the distribution of a specific serotype in a select host i s not exclusive. Generally the disease is more prevalent in areas where the climate is warm and humid, soils are alkaline and where there i s heavy rainfall and consequent abundance of surface water and stagnant pools. The disease appears to occur more frequently in areas of extensive rice or sugar-cane cultivation(2). Infections are incurred by contact with urine o f carriers or indirectly by contact with streams, ponds, swamps or wet soils contaminated with urine of carriers. Pathogenic leptospires can survive for 3 months or longer on neutral or slightly alkaline waters but do not persist in brackish or acid waters. In domestic animals the disease, in most cases, runs a sub-clinical course. It is, however, of economic importance as i t causes losses due to deaths, especially in the young, abortions, stillbirths, weak newborns and neonatal mortality, loss in breeding efficiency and loss in m i l k production. The disease occasionally assumes a more severe clinical character and is manifested as outbreaks of leptospirosis or as an "abortion storm".
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عنوان ژورنال:
- The Malaysian journal of pathology
دوره 2 شماره
صفحات -
تاریخ انتشار 1979