C. Protocols

Qualifying to Enter Flock From Isolation (pdf)
11. Qualifying of sheep to enter the flock from the Isolation Facility: (Appendix 5)  
 
a)
Sheep enter isolation for the following reasons:
 
i.
New purchases from a flock not “A” status.
 
ii.
Return from outside flock (e.g. show, demonstration) where there was exposure to sheep or goats of unknown or lower MV status.
 
iii.
SUSPECT MV test result,
 
(1)
It is strongly recommended that this group be kept separate from new or returning entries.
 
(2)
The HYPHEN Elitest does not have a SUSPECT category.
 
b)
All sheep in the Isolation Facility are treated as a group.  The status of the Isolation Group is the same as status of the lowest status animal in the group.
 
i.
It is strongly recommended that when animals enter the Isolation Facility, no new animals be added to the group until testing protocols are completed for the Isolation Group.
 
ii.
All sheep entering the Isolation Facility from outside the flock must undergo a MV test at entry.
 
iii.
An Isolation Group test must include all sheep in the Isolation Facility that are ≥180 days of age.
 
c)
Entry – Initial Qualifying Test – All NEGATIVE:
If the Isolation Group contains sheep which are new or returning entries to the flock  and the Isolation Group Test is NEGATIVE,
 
i.
Then the group remains in isolation and must undergo a second group test (Entry – Qualifying Test for Release) in 8 to 12 weeks after the Entry – Initial Qualifying Test.
 
(1)
Do not add any animals to the group during this time.
 
ii.
If the Entry – Qualifying Test for Release is NEGATIVE, and there have been no animals added to the Isolation Group in the meantime, then the group is eligible to enter the main flock.
 
d)
Entry –Qualifying Tests – One or more POSITIVE
If one or more sheep have a POSITIVE test at any point (i.e. Entry-Initial Qualifying Test; Entry – Qualifying Test for Release; or Entry – Qualifying Test for Release after POSITIVE Sheep Removed),
 
i.
The POSITIVE sheep must be removed and, if a ewe also their lambs < 180 days of age.
 
ii.
The entire remainder of the group that tested NEGATIVE must remain in isolation and be resampled and tested in 8 to 12 weeks after the date on which the last POSITIVE sheep was removed from the group, i.e. Entry – Qualifying Test after POSITIVE Sheep Removed.
 
iii.
If the entire Isolation Group is then found to be NEGATIVE on this subsequent test, the group may enter the flock.
 
iv.
However, if one or more sheep test POSITIVE on this subsequent test, the testing protocol must start again at Section C.11.d.i.
 
e)
Entry – Qualifying Tests – One or more SUSPECT and none POSITIVE.
If one or more sheep are found to be SUSPECT on any test and
 
i.
If, no other sheep in the Isolation Group test POSITIVE and
 
ii.
Upon retest, all suspect sheep, test NEGATIVE then
 
(1)
The group test will be considered a NEGATIVE test.
 
iii.
However, if upon retest, one or more SUSPECT sheep test POSITIVE or SUSPECT
 
(1)
The Isolation Group test is considered POSITIVE and you must follow the protocol at Section C.11.d.
 
iv.
The HYPHEN Elitest does not have a SUSPECT category.
 
f)
Sheep that have qualified to enter a flock enrolled in the OMVFSP, from the ISOLATION FACILITY on an Entry – Qualifying Test:
 
i.
On the next scheduled flock test those animals must be included in the flock test.  If an “A” status or Monitored Low-Risk test, they must be tested in addition to the random sample.
 
ii.
Flocks enrolled in the Monitored program are exempt.
 
g)
SUSPECT Isolation Group Test from a flock test. 
If all sheep in the Isolation Group are there as a result of a SUSPECT test on a flock test, and
 
i.
All sheep receive a subsequent NEGATIVE test on the retest within 30 days of the flock test,
 
(1)
The group of sheep can return to the flock immediately upon receipt of the test.
 
(2)
The HYPHEN Elitest has no SUSPECT category.
 
ii.
If one or more sheep in the Isolation Group test POSITIVE or SUSPECT, then the group test is considered POSITIVE and the protocol at Section C.11.d must be followed.
 
h)
If lambs are born or are nursing a ewe while the dam is in the Isolation Group,
 
i.
The lamb must be tested and removed as per the protocol set out for the main flock, i.e.
 
(1)
Lambs < 180 days of age will not be tested;
 
(a)
Lambs born to POSITIVE ewes must also be removed from the Isolation Group;
 
(b)
Lambs born to NEGATIVE ewes can remain with the dam.
 
(2)
Lambs ≥ 180 days must be tested as part of the Entry - Qualifying Test.