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The changing epidemiological pattern of hepatitis A in England and Wales

Published online by Cambridge University Press:  18 July 2002

M. C. MORRIS
Affiliation:
Immunisation Division, PHLS Communicable Disease Surveillance Centre, 61 Colindale Avenue, London NW9 5EQ (e-mail: [email protected])
N. J. GAY
Affiliation:
Immunisation Division, PHLS Communicable Disease Surveillance Centre, 61 Colindale Avenue, London NW9 5EQ (e-mail: [email protected])
L. M. HESKETH
Affiliation:
Seroepidemiology Unit, Preston Public Health Laboratory
P. MORGAN-CAPNER
Affiliation:
Seroepidemiology Unit, Preston Public Health Laboratory
E. MILLER
Affiliation:
Immunisation Division, PHLS Communicable Disease Surveillance Centre, 61 Colindale Avenue, London NW9 5EQ (e-mail: [email protected])
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Abstract

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Sera from an age-stratified sample of 4188 individuals, submitted for diagnostic purposes to 15 public health laboratories in England and Wales in 1996, were tested for hepatitis A antibody. The serological profiles were consistent with declining incidence in the past. This hypothesis was tested by comparing the serological profiles of Ashford, Leeds and Preston public health laboratories with those from sera collected during a previous study in the same laboratories in 1986/7. A comparison of equivalent 10 year birth cohorts revealed that significant hepatitis A seroconversion had only continued in Ashford. However, it is probable that most seroconversions are due to vaccination and immigration rather than continuing viral transmission. Further population-based surveys collecting more in-depth social and demographic data are needed to confirm the main factors influencing hepatitis A seroprevalence and to explain the regional differences.

Type
Research Article
Copyright
2002 Cambridge University Press