| 1. | Leptospirosis is caused by bacteria of the genus leptospira . they may be free - living or associated with animal hosts and survive well in fresh water , soil , and mud in tropical areas . animal hosts include cattle , pigs , horses , dogs , rodents and wild animals
端螺旋体病由端螺旋体属细菌引起，它们可独立生存或寄居于动物宿主，包括牛猪马狗老鼠及野生动物，此外，端螺旋体亦常见于热带地区的水源土地及淤泥中。 |
