Jaagsiekte sheep retrovirus Jaagsiekte sheep retrovirus Jaagsiekte sheep retrovirus (JSRV) is a betaretrovirus which is the causative agent of a contagious lung cancer in sheep, called ovine pulmonary adenocarcinoma. JSRV is the virus that is the cause of the contagious lung tumors in sheep called ovine pulmonary adenocarcinoma (OPA). The disease has also been called "jaagsiekte", after the Afrikaans words for "chase" ("jaag") and "sickness" ("siekte"), to describe the respiratory distress observed in an animal out of breath from being chased, indicating the breathing difficulty experienced by infected sheep. Transmission of virus is through aerosol spread between sheep. The exogenous infectious form of
King Animal would be released on November 13, 2012. Explaining the title "King Animal", Cornell declared that it relates to how the band "were a big fish in a small pond, and we sort of graduated. There was a sense of us feeling like it was us four against the world. We clearly had that from the very beginning. In some weird way after all this time, we persevered. The album kind of stands out as a symbol and an indication of that." Thayil reported that some songs sound "similar in a sense to "Down on the Upside"" and that the album