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Vaccination Experiments on Pregnant Mice with E. Coli Vaccines Prepared from Septicaemic and Enteropathogenic Strains of E. Coli

Vaccinationsforsøg på drægtige mus med E. coli vacciner fremstillet ud fra septikæmiske og enteropatogene stammer af E. coli

Abstract

Experiments have been carried out with vaccination of pregnant mice against E. coli, followed by i.p. challenge of the offspring at one week of age.

With a septicaemic strain the results were highly significant, and the method is therefore recommendable for testing of vaccines against such strains of E. coli.

Results were less clear-cut with enteropathogenic strains of E. coli. However, with mortality rates of 40 to 45 % in baby mice born by non-vaccinated mothers and less than 15 % in baby mice born by vaccinated mothers, the difference in percentage mortality seems sufficient to warrant the use of the method also in the control of vaccines against enteropathogenic E. coli strains.

Sammendrag

Der er gennemført forsøg med vaccination af drægtige mus med E. coli vacciner og påfølgende i.p. challenge af afkommet i 7 dages alderen.

Ved forsøg med septikæmiske stammer fik man udtalt signifikante resultater, og metoden kan derfor anbefales til kontrol med vacciner mod septikæmiske stammer af E. coli.

Resultaterne var mindre udtalte ved forsøg med enteropatogene stammer af E. coli. Med en mortalitet på 40–45 % blandt museunger efter uvaccinerede mødre og under 15 % blandt museunger efter vaccinerede mødre synes forskellen i mortalitet tilstrækkelig til at betragte metoden anvendelig også i kontrollen med vacciner mod enteropatogene stammer af E. coli.

References

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Dam, A. Vaccination Experiments on Pregnant Mice with E. Coli Vaccines Prepared from Septicaemic and Enteropathogenic Strains of E. Coli. Acta Vet Scand 14, 691–699 (1973). https://doi.org/10.1186/BF03547398

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