South Dakota Administrative Rules › Title 12 - Department of Agriculture › Article 12:68 - Disease control and meat inspection › Chapter 12:68:23 - Tuberculosis control in cervidae › Section 12:68:23:04 - Official tuberculosis tests

Current through Register Vol. 51, page 10, July 15, 2024
The following primary and supplemental diagnostic tests are the
	 official tests approved for use in testing and retesting for tuberculosis in
	 cervidae.
(1) The single cervical
  tuberculin test is a primary test that may be used in individual captive
  cervidae and in herds of unknown tuberculosis status. Each captive cervidae
  that responds to the single cervical tuberculin test must be classified as a
  suspect until it is retested with the comparative cervical tuberculin test and
  is either found negative for tuberculosis or is classified as a reactor,
  unless, with exception of a designated accredited veterinarian, the testing
  veterinarian determines that the captive cervidae should be classified as a
  reactor based on its response to the single cervical tuberculin test. A
  designated accredited veterinarian must classify a responding captive cervidae
  as a suspect, unless the state veterinarian determines, based on
  epidemiological evidence, that the captive cervidae should be classified as a
  reactor. A captive cervidae that responds to the single cervical tuberculin
  test must not be retested using the dual path platform test;
(2) The single cervical tuberculin test is a
  primary test that may be used in affected herds and in herds that have received
  captive cervidae from an affected herd. If used with affected herds or in herds
  that have received a captive cervidae from an affected herd, the single
  cervical tuberculin test may only be administered by a veterinarian employed by
  the state in which the test is administered or employed by USDA. In affected
  herds or herds that have received captive cervidae from an affected herd, each
  captive cervidae that responds to the single cervical tuberculin test must be
  classified as a reactor, unless the state veterinarian determines, based on
  epidemiological evidence, that the cervidae should be classified as a suspect
  because of possible exposure to a tuberculous animal;
(3) The dual path platform test is a primary
  test that may be used in individual captive elk, red deer, whitetailed deer,
  fallow deer, and reindeer, and in herds of these species that are of unknown
  tuberculous status. Each captive cervidae that has nonnegative test results to
  the dual path platform test must be classified as a suspect, unless the state
  veterinarian determines, based on epidemiological evidence, that the captive
  cervidae should be classified as a reactor. The cervidae may be retested with
  the dual path platform test to evaluate a new blood sample drawn from the
  cervidae no less than 30 days after the first dual path platform test. A
  captive cervidae that has nonnegative test results on two successive dual path
  platform tests must be classified as a reactor. A captive cervidae that has
  nonnegative test results to the dual path platform test may not be retested
  using the single cervical tuberculin or comparative cervical tuberculin
  test;
(4) The comparative cervical
  tuberculin test is a supplemental test that may only be used in order to retest
  captive cervidae that have been classified as suspects after being tested with
  the single cervical tuberculin test. The comparative cervical tuberculin test
  may be used in affected herds only after the herd has tested negative to at
  least two whole herd single cervical tuberculin tests and only with the prior
  written consent of the state veterinarian. The comparative cervical tuberculin
  test may not be used as a primary test. Captive cervidae tested with the
  comparative cervical tuberculin test are classified as follows:
(A) A captive cervidae tested with the
  comparative cervical tuberculin test must be classified as negative if it has a
  response to the bovine purified protein derivative tuberculin that is less than
  1 mm;
(B) Unless the testing
  veterinarian determines that the captive cervidae should be classified as a
  reactor because of possible exposure to a tuberculous animal, a captive
  cervidae tested with the comparative cervical tuberculin test must be
  classified as a suspect if:
(1) It has a
  response to the bovine purified protein derivative tuberculin that is greater
  than 2 mm and that is equal to the response to the avian purified protein
  derivative tuberculin; or
(2) It
  has a response to the bovine purified protein derivative tuberculin that is
  equal to or greater than 1 mm and equal to or less than 2 mm and that is equal
  to or greater than the response to the avian purified protein derivative
  tuberculin; and
(C) A
  captive cervidae tested with the comparative cervical tuberculin test must be
  classified as a reactor if:
(1) It has a
  response to the bovine purified protein derivative tuberculin that is greater
  than 2 mm and that is at least 0.5 mm greater than the response to the avian
  purified protein derivative tuberculin; or
(2) It has been classified as a suspect on
  two successive comparative cervical tuberculin tests.
Any exceptions to the reactor classification under the conditions in
	 this subsection must be justified by the testing veterinarian in writing and
	 have the concurrence of the state veterinarian.