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Frequency of isolation of enterotoxigenic staphylococci from milk of nursing mothers in Kaduna, Nigeria

Published online by Cambridge University Press:  19 October 2009

J. D. Adekeye  and
A. A. Adesiyun
J. D. Adekeye
Affiliation:
Department of Veterinary Microbiology and Pathology, Ahmadu Bello University, Zaria, Nigeria
A. A. Adesiyun
Affiliation:
Department of Public Health and Preventive Medicine, Ahmadu Bello University, Zaria, Nigeria
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Milk samples from 251 nursing mothers were screened for enterotoxigenic staphylococci. The incidence of staphylococci in milk samples was 71·3%. Two hundred and sixteen strains were isolated from 179 mothers. Eighty-six (39·8%) of the 216 strains were found to be toxigenic. Enterotoxin type A (SEA) predominated, with 41 strains (19·0%) elaborating it. Twenty-one strains (9·7%) produced enterotoxin B (SEB) while only eight (3·7%) produced enterotoxin C (SEC). Ten strains (4·6 %) produced all three types. Enterotoxigenic strains usually produced coagulase, thermonuclease and alpha haemolysin.

In this series breast-feeding alone was more common than combined breast and bottle feeding, especially among mothers less than 30 years old. The incidence of reported infantile diarrhoea decreased with increasing age of the mother. Of 16 babies with diarrhoea, 10 (62·5%) had mothers whose milk yielded staphylococci. Six of these were toxigenic. Although no direct relationship between enterotoxigenic staphylococci in the milk of nursing mothers and infantile diarrhoea could be demonstrated, these findings reveal a potential health risk to these infants.

Type
Research Article
Information
Journal of Hygiene , Volume 93 , Issue 3 , December 1984 , pp. 531 - 538
Copyright
Copyright © Cambridge University Press 1984

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