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From: TSS ()
Date: July 15, 2005 at 4:15 pm PST

In Reply to: Re: JOHANNS ANNOUNCES NEXT STEPS FOR IMPORTING posted by TSS on July 15, 2005 at 11:51 am:

>>>"So what they're saying doesn't make a lot of sense to me. Under what we're proposing with Japan, what they're saying just, there just isn't a possibility that that would occur. You're not going to find BSE in animals 20 months and younger. <<<

ii. The assumption of low BSE test sensitivity.

Studies coordinated by the EU have shown that the current BSE tests have very

high sensitivity among cattle showing clinical signs of BSE infection. However, due

to the variation in the incubation period for BSE, it is not possible to determine how

sensitive current BSE tests are prior to clinical onset. The updated analysis was

based on the conservative assumption that the test will only pick up infected

animals in approximately the last 3 months prior to clinical disease (as was also

assumed in the 2003 analysis). ...

Incubation Period

The incubation period usually ranges from 2 to 8 years. Following the onset of clinical signs, the animal's condition gradually deteriorates until the animal becomes recumbent, dies, or is destroyed. This usually takes from 2 weeks to 6 months. Most cases in Great Britain have occurred in dairy cows (Friesians) between 3 and 6 years of age (50). The youngest confirmed case occurred in a 20-month-old heifer, and the oldest case was found in a cow 18 years of age.

Food risks

The Southwood Working Party considered that all reasonably practicable precautions should be taken to reduce the risks that would exist should BSE prove to be transmissible to humans. However, they did not make this plain in their Report and did not recommend that the possible risks from eating animals incubating BSE but not yet showing signs of the disease ('subclinical cases') called for any precautions, other than a recommendation that manufacturers should not include ruminant offal and thymus in baby food. This was a shortcoming in their Report.
Because of a failure to subject the Southwood Report to an adequate review, MAFF and DH failed to identify this shortcoming. Concern about the food risks posed by subclinical cases was, however, expressed by some scientists, by the media and by the public. With the agreement of DH, MAFF reacted by announcing in June 1989 that those categories of offal of cattle most likely to be infectious (SBO) were to be banned from use in human food. The introduction of this vital precautionary measure was commendable. However, this ban was presented to the public in terms that underplayed its importance as a public health measure.

It cannot be excluded that some, especially long-lived, species of zoo animals, are

currently incubating TSE (e.g. as FSE in cheetahs and felids and BSE in primates), but

the incubation period is unknown and probably is unique to each species (Kirkwood et

al, 1995). Whether or not subclinical infection of the BSE, or some similar, agent can

be transmitted vertically (or conceivably horizontally) within one or more zoo/exotic

species is, as yet, unknown, but is a possibility.

Johann and his mad cow crystal ball must go.
his crystal ball on BSE/TSE is full of lies and myths.
CAN johann prove that BSE/TSE in cattle will never and has never happened in cattle under 20 months.
please document this science that a cow under 20 cannot carry/harbour the TSE/BSE agent? show me the data? show me this data that sub-clinical or 2nd passage of the agent does not exist?


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