Temporal Variation in Viral Hemorrhagic Septicemia Virus Antibodies in Freshwater Drum (Aplodinotus grunniens) Indicates Cyclic Transmission in Lake Winnebago, Wisconsin

威斯康星州温尼贝戈湖淡水鼓鱼（Aplodinotus grunniens）体内病毒性出血性败血症病毒抗体的时间变化表明该病毒存在周期性传播。