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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.
The tumors have overactive secretory functions, which are a hallmark of OPA. [citation needed] The retroviral antigen levels of JSRV are very high in OPA tumors and can be detected in the lung secretions of infected sheep. It is thought that infected animals secrete the virus before showing signs, so the virus is easily spread within flocks.
Diseases caused by viruses include: Akabane virus infection; bluetongue disease; border disease (hairy shaker disease) Cache Valley virus infection; caprine arthritis encephalitis (CAE) enzootic nasal adenocarcinoma; foot-and-mouth disease; mastitis; Nairobi sheep disease orthonairovirus (NSDV) infection
The disease, enzootic nasal adenocarcinoma is common in North America and is found in sheep and goats on every continent except New Zealand and Australia. [5] There are more than 27 betaretroviruses similar to ENVT and JSRV in the ovine genome. [6] [7] In the future, research on ENTV may become important in studying viruses that cause human ...
Cache Valley virus is the most common Orthobunyavirus in North America, [17] and while isolated in 1956, was only linked to disease in Texas in 1987 during a large occurrence of aborted and malformed lambs in a sheep flock. [18] The virus does not only infect sheep, however, as In 2002 a survey conducted in 22 states showed 28% of cattle ...
Parasitic bronchitis, also known as hoose, husk, or verminous bronchitis, [1] is a disease of sheep, cattle, goats, [2] and swine caused by the presence of various species of parasite, commonly known as lungworms, [3] in the bronchial tubes or in the lungs. It is marked by cough, dyspnea, anorexia and constipation.
This is because most HERVs are merely traces of original viruses, having first integrated millions of years ago. An analysis of HERV integrations is ongoing as part of the 100,000 Genomes Project. [57] A 2023 study found HERV can become awakened from dormant states and contribute to aging which could be blocked by neutralizing antibodies. [58] [59]
Wesselsbron (WSL) virus is an arthropod-borne virus in the genus Flavivirus of the family Flaviviridae [1] that causes Wesselsbron disease in cattle, sheep, goats, camels, pigs, donkeys, horses, ostriches, and wild ruminants [2] with occasional incidental spillover to humans. [3]