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Sex Transm Infect. 2005 Apr;81(2):103-7.

A systematic review of the epidemiology and interaction of herpes simplex virus types 1 and 2.

Author information

1
Department of Infectious Disease Epidemiology, Imperial College Faculty of Medicine, St Mary's Campus, Norfolk Place, London W2 1PG, UK. k.looker@imperial.ac.uk

Abstract

OBJECTIVES:

To explore epidemiological evidence about the interaction of herpes simplex virus (HSV) 1 and HSV-2 infections.

METHODS:

A systematic review was undertaken of published epidemiological studies describing the pattern of HSV-1 or HSV-2 by age, and the coincidence of the two viral infections.

RESULTS:

In cross sectional studies the unadjusted odds of HSV-2 are greater in those with HSV-1 infection in study populations categorised as "low risk" (p = 0.06) and across European populations (p = 0.001). This was not evident in "high risk" populations or in the United States. This increased risk of HSV-2 in those with HSV-1 infection does not agree with the results of prospective studies where there is a non-significant trend towards a lower risk of HSV-2 infection associated with previous HSV-1 infection.

CONCLUSIONS:

"Low risk" and European populations have a relatively low HSV-2 seroprevalence and infection is more concentrated in those with characteristics putting them at high risk for both HSV-1 and HSV-2. This confounding could mask any protective effect of HSV-1, which is hinted at, but not demonstrated, in prospective and adjusted studies.

PMID:
15800084
PMCID:
PMC1764655
DOI:
10.1136/sti.2004.012039
[Indexed for MEDLINE]
Free PMC Article
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