Prevalence of infection with herpes simplex virus types 1 and 2 in Australia: a nationwide population based survey
- 1Westmead Millennium Institute and University of Sydney, Westmead Hospital, Westmead, NSW 2145, Australia
- 2School of Public Health, The University of Sydney, Sydney, NSW 2006, Australia
- 3Sexually Transmitted Infections Research Centre and University of Sydney, Marian Villa, Westmead Hospital, Westmead, NSW 2145, Australia
- 4International Diabetes Institute, 250 Kooyong Road, Caulfield, Victoria 3162, Australia
- Correspondence to: Professor Adrian Mindel Sexually Transmitted Infections Research Centre and University of Sydney, Marian Villa, Westmead Hospital, Westmead, NSW 2145, Australia;
- Accepted 17 September 2005
Background: Studies demonstrating previous herpes simplex virus (HSV) type 2 infection as a risk factor for HIV transmission, and the development of a HSV vaccine candidate, have emphasised the need for worldwide population based studies of HSV seroprevalence. The only nationwide seroprevalence studies have been conducted in the United States.
Methods: An Australia-wide, population based study of HSV-1 and HSV-2 seroprevalence was conducted, using serum and sociodemographic data collected between 1999–2000, for a representative study of risk factors for diabetes in over 11 000 adults. A stratified random sample of 4000 was tested for HSV-2 and 1000 for HSV-1, with sampling and weighting for various demographic factors.
Results: Seroprevalence of HSV-2 in Australian adults was 12%. Prevalence in women (16%) was twice that in men (8%). Rural populations had a lower prevalence (9%) than metropolitan (13%), and Indigenous had a higher prevalence (18%) than the non-Indigenous populations (12%). The seroprevalence of HSV-1 was 76% with significant differences by age group, sex and Indigenous status.
Conclusion: These are the first nationwide data to compare with US studies. HSV-2 infection is less common in Australia than the United States, and this will allow planning for combating HIV transmission in high prevalence populations in northern Australia. In addition, the high HSV-1 seroprevalence will be important for future deployment of genital herpes vaccines.
- ELISA, enzyme linked immunosorbent assay
- HSV, herpes simplex virus
- NHANES, National Health and Nutrition Survey
- OR, odds ratio
- RR, relative risk
- STI, sexually transmitted infections
Financial support: This study was funded by an unconditional research grant from GlaxoSmithKline Australia.
Conflict of interest: none.