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Published on: March 8, 2012
Anogenital human papillomavirus in non-abused preschool children
A K Myhre1, A Dalen, K Berntzen
1Department of Laboratory Medicine, Children's and Women's Health, Norwegian University of Science and Technology, Trondheim, Norway. arne.k.myhre@medisin.ntnu.no
Insights
Human papillomavirus (HPV) was detected in 1.2% of anal and 3.0% of genital samples from non-abused girls aged 5-6. HPV was not found in boys, suggesting HPV is unreliable for detecting sexual abuse in young children.
Area of Science:
- Pediatrics
- Virology
- Public Health
Background:
- Human papillomavirus (HPV) infections are common globally.
- Anogenital HPV detection in children has been historically linked to concerns of sexual abuse.
- Limited data exists on HPV prevalence in non-abused children.
Purpose of the Study:
- To determine the prevalence of anogenital human papillomavirus (HPV) in a cohort of young children selected for non-abuse.
- To assess the utility of HPV detection as an indicator of sexual abuse in this age group.
Main Methods:
- A self-selected cohort of 5-6-year-old children (girls and boys) provided informed consent for anogenital examination and sampling.
- Samples were analyzed for HPV using polymerase chain reaction (PCR) and sequencing.
- Mechanisms were in place to exclude children with suspected sexual abuse.
Main Results:
- HPV was detected in 1.2% of anal and 3.0% of genital specimens from 211 enrolled children (primarily girls).
- No HPV was detected in any of the boys.
- Anogenital warts were observed in 1.8% of the girls.
Conclusions:
- The prevalence of HPV in this non-abused pediatric cohort is low.
- HPV detection in anogenital samples is not a reliable indicator of sexual abuse in 5-6-year-old children.
- Observed rates of anogenital warts were comparable to those reported in abused children.
Aim:
To estimate the prevalence of human papillomavirus (HPV) in anogenital samples from children selected for non-abuse.
Methods:
A letter of invitation was sent to 2731 girls and 1042 boys, all of them aged 5 or 6 y. Inclusion was based on self-selection, whereby parents who did not suspect any occurrence of sexual abuse of their child gave informed consent to participate. Several mechanisms were undertaken to exclude abused children. A complete examination was done of each child, including anogenital examination with a colposcope and microbiological sampling from the genitals and anus. Polymerase chain reaction (PCR) using primers MY09 and MY11 was used to identify HPV, and sequencing was done on each positive amplicon.
Results:
PCR was performed on 325 adequate specimens from 211 children enrolled. Seven samples from 5 girls were HPV-positive, making 2/161 (1.2%) of the anal and 5/164 (3.0%) of the genital specimens positive. HPV was not detected in any of the boys. In four girls strong associations with HPV 6 genotypes were found, while one girl probably had a mixed infection with HPV 6 and 16. Three girls (1.8%) had clinically detectable anogenital warts.
Conclusion:
Since our results are comparable with a prevalence reported from allegedly abused children, and higher rates have been reported from the oral cavity in healthy children, we find detection of HPV unreliable as an indicator of sexual abuse in 5-6-y-old children. The rate of anogenital warts found in our study is comparable with a rate reported in abused children.
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