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Open Access Research article

A cross sectional study of HPV type prevalence according to age and cytology

Elena Argyri1, Stefanos Papaspyridakos1, Elpida Tsimplaki1, Lina Michala2, Evangelia Myriokefalitaki1, Issidora Papassideri3, Dimitra Daskalopoulou4, Ioanna Tsiaoussi1, George Magiakos5 and Efstathia Panotopoulou1*

Author Affiliations

1 Department of Virology, “G. Papanikolaou” Research Center of Oncology and Experimental Surgery, Regional Anticancer Oncology Hospital of Athens “St. Savvas”, 171 Alexandras Avenue, 11522, Athens, Greece

2 1st Department of Obstetrics and Gynaecology, University of Athens, ‘Alexandra’ Hospital, Alexandra, Greece

3 Department of Cell Biology and Biophysics, Faculty of Biology, University of Athens, Panepistimiopolis, 15784, Athens, Greece

4 Department of Cytopathology, Regional Anticancer Oncology Hospital of Athens "St. Savvas", 171 Alexandras Avenue, 11522, Athens, Greece

5 1st Department of Gynaecology, Regional Anticancer Oncology Hospital of Athens "St. Savvas", 171 Alexandras Avenue, 11522, Athens, Greece

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BMC Infectious Diseases 2013, 13:53  doi:10.1186/1471-2334-13-53

Published: 30 January 2013

Abstract

Background

A cross sectional study to investigate HPV prevalence according to age and cytology.

Methods

Women presenting to a gynaecological outpatient clinic for a Pap smear test were included in the study (n=3177). All women had cervical cytology and HPV testing.

Results

Overall prevalence of any 24 HPV type analysed was 33.1% (95% CI 31.5% to 34.7%) and HPV 16 and HPV 42 were the most frequent (6.7% (95% CI 5.8% to 7.6%), 6.8% (95% CI 5.9% to 7.6%)), in total samples. Multiple HPV infection rate was 12.9% (95% CI 11.8% to 14.1%). High risk HPV (hrHPV) types were present in 27.4% (95% CI 25.8% to 28.9%) of the samples.

HPV prevalence was highest among 14 to 19 y.o (46.6% (95% CI 40.7%-52.4%)) and second highest among 30–34 y.o. (39.7%, 95% CI 35.4%–44%). HPV 16 was highest among 20–24 (9.0% (95% CI 6.4%–11.6%)) and second highest among 50 to 54 y.o. (6.3% (95% CI 2.9% to 9.8%).

In Low-grade Squamous Intraepithelial Lesions (LgSIL) cytology samples, the most frequently detected hrHPV types were: 16 (14.5% (95% CI 12.1% to 16.9%)), 51 (13.0% (95% CI 10.7% to 15.3%)) and 53 (9.1% (95% CI 7.2% to 11.1%)) and in High-grade Squamous Intraepithelial Lesions (HgSIL) were: HPV 16 (37.2% (95% CI 26.5% to 47.9%)), HPV 51 (17.9% (95% CI 9.4% to 26.5%)) and HPV 18 (12.8% (95% CI 5.4% to 20.2%)).

Conclusions

In the population studied, HPV 16 and 51 were the most frequent detected hrHPV types. HPV positivity, hrHPV and multiple HPV types infections were higher in young women, while HPV prevalence declined with increasing age and presented two peaks a higher (14–19 y.o.) and a lower one (30–34 y.o.) These results may contribute to the creation of a national screening programme.

Keywords:
Human papillomavirus (HPV); Prevalence; Typing; Age-distribution; Cytology