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Livestock & Forage
Gamma TB test
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<blockquote data-quote="bovine" data-source="post: 3731600" data-attributes="member: 12486"><p>I'm not getting drawn into a TB thread as there is too much emotion. We know there will be false positive results with the gamma interferon test and there will be extreme example (like [USER=169]@matthew[/USER] mentions) where there were large numbers of false positive results, but it remains a useful test to help remove early infected cattle from a new breakdown herd. I'm not going into detail but we've had a number of breakdowns with bought in cattle and the gamma interferon has helped to rapidly clear infected animals from the herds (admittedly we don't knowingly have it in the wildlife). </p><p></p><p>In a known infected herd the likelihood is that many of the positives are true positives. It would be a crap screening test. It does have a useful place in TB control and linking rates to visible lesions is pretty meaningless.</p></blockquote><p></p>
[QUOTE="bovine, post: 3731600, member: 12486"] I'm not getting drawn into a TB thread as there is too much emotion. We know there will be false positive results with the gamma interferon test and there will be extreme example (like [USER=169]@matthew[/USER] mentions) where there were large numbers of false positive results, but it remains a useful test to help remove early infected cattle from a new breakdown herd. I'm not going into detail but we've had a number of breakdowns with bought in cattle and the gamma interferon has helped to rapidly clear infected animals from the herds (admittedly we don't knowingly have it in the wildlife). In a known infected herd the likelihood is that many of the positives are true positives. It would be a crap screening test. It does have a useful place in TB control and linking rates to visible lesions is pretty meaningless. [/QUOTE]
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Gamma TB test
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