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11 - Immunity to Salmonella in domestic (food animal) species

Published online by Cambridge University Press:  04 December 2009

Duncan Maskell
By
Paul Wigley ,
Paul Barrow  and
Bernardo Villarreal-Ramos
Edited by
Pietro Mastroeni
Duncan Maskell
Affiliation:
University of Cambridge
Paul Wigley
Affiliation:
Institute for Animal Health, Compton, Newbury, Berkshire RG20 7NN, UK
Paul Barrow
Affiliation:
Institute for Animal Health, Compton, Newbury, Berkshire RG20 7NN, UK
Bernardo Villarreal-Ramos
Affiliation:
Institute for Animal Health, Compton, Newbury, Berkshire RG20 7NN, UK
Pietro Mastroeni
Affiliation:
University of Cambridge
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Summary

INTRODUCTION

Salmonellosis in domestic animal species is important in terms of animal welfare and productivity. Infection may lead to decreased yields of milk, eggs or meat, and in certain cases loss of livestock. Salmonellosis in domestic species is also important for public health as the major reservoir and source of food-borne human infections.

A number of Salmonella enterica serovars can induce a systemic typhoid-like disease in healthy adults of a restricted range of host animal species. Other serovars colonize the intestine of the host and in some cases may induce severe enteritis. The severity of the disease will be dependent on the virulence and dose of the challenge and immune status of the host. Thus, some S. enterica strains that would normally induce enteritis in adult hosts are able to induce systemic disease in immuno-compromised hosts. Immunity to S. enterica is dependent on the nature of the disease that different serovars induce in different hosts. Thus, mucosal immunity is more likely to be important in protecting against serovars that induce enteritis, whereas systemic immunity would be more important in protecting against serovars that induce systemic disease.

Our understanding of the interaction of the host's immune system with different S. enterica serovars is still rudimentary. Effective control of salmonellosis affecting domestic host species requires a greater understanding of immunological mechanisms during such infections. This will provide the basis from which rational control measures, such as more effective vaccines, vaccination strategies, diagnostic tools or other non-immunological tools may be developed.

Type
Chapter
Information
Salmonella Infections
Clinical, Immunological and Molecular Aspects
 , pp. 299 - 322
Publisher: Cambridge University Press
Print publication year: 2006

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