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Porcine Reproductive and Respiratory Syndrome
(view source)
Revision as of 18:40, 27 August 2010
466 bytes removed
,
18:40, 27 August 2010
→Pathogenesis
Line 21:
Line 21:
==Pathogenesis==
==Pathogenesis==
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Transmission of PRRS virus to swine occurs most efficiently
+
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through direct contact. Blood, saliva, urine, milk
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and semen from infected animals have been shown to
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transmit PRRS virus to susceptible swine (Wills et al.,
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1997). Aerosol transmission may occur but has proven
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difficult to demonstrate even over relatively short distances
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(meters). Transmission by semen, either
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through natural service or artificial insemination is well
−
established (Yaeger et al., 1993).
Following exposure to PRRS virus, primary replication
Following exposure to PRRS virus, primary replication
occurs in regional or mucosal macrophages (Rossow,
occurs in regional or mucosal macrophages (Rossow,
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