Tilapia Lake Virus

Tilapia Lake Virus (TiLV) is a highly pathogenic virus that poses a significant threat to cultured and wild stocks of tilapia.  Little is know about effective control methods.  Infected fish often show loss of appetite, slow movement, dermal lesions and ulcers, ocular abnormalities, and opacity of the lens (i.e., cloudy eyes).  The disease has been confirmed in some countries in Africa, Asia and Latin Americal.  The impact on infected tilapia populations is significant with desease-associated mortality as high as 90%.