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A Comparative Study of Bovine Abortion and Undulant Fever, from the Bacteriological point of View

Published online by Cambridge University Press:  15 May 2009

Z. Khaled
Z. Khaled
Affiliation:
Bacteriologist, Hygienic Institute, Cairo.
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1. Morphologically B. abortus and B. melitensis are identical. The “coccoid” form is not a constant feature and a more satisfactory generic name would be “Brucella.”

2. The organisms cannot be differentiated by cultural, bio-chemical, or staining methods, or by the agglutination reaction.

3. From absorption experiments, it would appear that B. melitensis is a sub-strain of B. abortus.

4. Dose for dose B. abortus is much less virulent for the guinea-pig than B. melitensis, approximately about 1: 6.

5. Immunisation of monkeys (one experiment only) with killed suspensions of B. abortus protected against subsequent infection with B. melitensis.

In conclusion I wish to thank Professor Ledingham for much valuable advice throughout the investigation, and Dr R. St John Brooks for supplying me with cultures from the National Collection.

Type
Research Article
Information
Journal of Hygiene , Volume 20 , Issue 4 , December 1921 , pp. 319 - 329
Copyright
Copyright © Cambridge University Press 1921

References

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