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G A Spinks

Publications and source records attributed to G A Spinks.

4 recordsLinked to original sources

Evaluation of a modified complement fixation test and an indirect hemagglutination test for the serodiagnosis of melioidosis in pigs.

A complement fixation test modified by the addition of porcine serum and an indirect hemagglutination test were used to detect antibodies to Pseudomonas pseudomallei in pigs. These tests together with cultural examinations were carried out with 250 pigs. The sensitivity and specificity values were 79.3 and 99.5% and 82.8 and 93.2% for the modified complement fixation and hemagglutination tests, respectively. When results from the combination of both tests were considered, the values were 86.2 and 92.8%, respectively.

Animals↗

Evaluation of four serological tests for the diagnosis of caprine melioidosis.

A complement fixation (CF) test, 2 indirect haemagglutination (IHA-A; IHA-L) tests which differed in antigen preparation and technique, and a microtitre agglutination (MA) test were compared in the serodiagnosis of melioidosis in goats. One hundred and eighteen experimental serums and 3143 field serums from goats in endemic and non-endemic areas of north Queensland were used in the evaluation. Culture of samples for Pseudomonas pseudomallei from 112 goats provided substantiating evidence of infection. The IHA-A test was the most sensitive, and the CF test the most specific. We advocate the use of the IHA-A as a screening test followed by the CF test for confirmation of active melioidosis. The IHA-A test is the better indicator of past infection.

Acute Disease↗

Observations on single brucellosis reactors in large herds.

Over a 3 year period specimens were collected from single reacting cattle to the complement fixation test for brucellosis from large herds in north Queensland. Twenty-four such reactors were destroyed for culture, and Brucella abortus was isolated on 3 occasions. The existence of such low levels of Br. abortus in large herds should not be overlooked in the eradication campaign. Explanations were found for 17 of the single reactors, and included introduction of cattle to the herd, exposure to adjoining infected herds or vaccination with Strain 19.

Animals↗