Longitudinal Molecular Epidemiological Analysis of Feline Calicivirus Infection in an Animal Shelter: a Model for Investigating Calicivirus Transmission Within High-density, High-turnover Populations

Overview

Journal J Clin Microbiol

Specialty Microbiology

Date 2007 Aug 10

PMID 17687017

Citations 21

Authors

Karen P Coyne

David Edwards

Alan D Radford

Peter Cripps

David Jones

James L N Wood

Rosalind M Gaskell

Susan Dawson

Affiliations

Soon will be listed here.

Abstract

The control of outbreaks of calicivirus infection in high-density, high-throughput populations is a challenge to both human and veterinary medicine. In such populations, the prevalence of infection is, in part, dependent on the levels of biosecurity and how this affects virus transmission. Here we show how longitudinal analysis of feline calicivirus (FCV) infection in an animal rescue shelter can be used as a model to examine the dynamics of calicivirus transmission and evolution in such environments. FCV was isolated from 33 of 116 cats sampled over a 15-month period (overall prevalence, 28%). Sequence analysis of the immunodominant variable regions of the viral capsid gene identified 16 strains circulating in the shelter, with no single strain appearing to predominate. The majority of these strains were introduced into the shelter from the community and did not appear to be transmitted within the population. However, for three of these strains, putative transmission events within the shelter were identified. The rates of evolution within hypervariable regions of the FCV capsid gene in individual cats ranged from 0.05 to 1.4% per week, with the highest rates generally being found in animals that either acquired the virus while in the shelter or were undergoing acute infection. These data suggest that despite the high prevalence and presence of multiple strains of FCV within the shelter, the spread of such pathogens may be restricted by various control measures, including good hygiene and biosecurity.

Citing Articles

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