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Guinea-pigs as Chronic Carriers of an Organism Belonging to the Food-poisoning Group

Published online by Cambridge University Press:  15 May 2009

R. A. O'Brien
R. A. O'Brien
Affiliation:
(From the Lister Institute of Preventive Medicine.)
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A stock of 500 guinea-pigs at the Lister Institute was attacked by an epizootic and only 21 survived. These survivors showed definite immunity to a bacillus of the food-poisoning group (indistinguishable from B. aertryck and the B. suipestifer) recovered frequently from animals dying during the epizootic. Five of them have been proved to be carriers excreting the bacillus intermittently five month's later and the serum of all of them agglutinates the bacillus. Spread of infection apparently did not occur amongst contacts placed with these carriers in the few experiments carried out.

Type
Research Article
Information
Journal of Hygiene , Volume 10 , Issue 2 , August 1910 , pp. 231 - 236
Copyright
Copyright © Cambridge University Press 1910

References

page 231 note 1 The identification of the bacillus will be discussed later.

page 231 note 2 The use of plates containing both lactose and saccharose was found to facilitate the isolation of the bacillus, since many organisms present in faeces which do not ferment lactose but produce acid in saccharose are excluded by this method.

page 236 note 1 Bainbridge (vide supra) has also shown that the B. suipestifer and the B. aertryck are indistinguishable by agglutination and absorption tests.