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Human Papillomavirus Concordance Between Parents and Their Newborn Offspring: Results From the Finnish Family Human
Nelli T Suominen1,2, Tiina H Luukkaala3,4, Claudie Laprise5
1Department of Obstetrics and Gynecology, Turku University Hospital, University of Turku, Turku, Finland.
Background:
The knowledge on vertical human papillomavirus (HPV) transmission is limited. We aimed to determine whether HPV transmission from parents to their offspring occurs before or during birth.
Methods:
Altogether, 321 mothers, 134 fathers, and their 321 newborn offspring from the Finnish Family HPV study cohort were included. Parents' genital and oral brush samples and semen samples were collected for HPV testing at baseline (36 weeks of pregnancy). Oral, genital, and umbilical samples from the newborn and placenta samples were collected for HPV testing immediately after delivery. HPV risk for the newborn was calculated from the mother's and father's HPV status by using logistic regression analyses.
Results:
Concordances between mothers' and their newborns' HPV genotype at any site were statistically significant with HPV-6, -16, -18, -31, and -56; odds ratios (ORs) ranged from 3.41 (95% confidence interval [CI], 1.80-6.48) for HPV-16 to 634 (95% CI, 28.5-14 087) for HPV-31. Father-newborn HPV concordance was statistically significant with HPV-6 and HPV-31 (ORs, 4.89 [95% CI, 1.09-21.9] and 65.0 [95% CI, 2.92-1448], respectively).
Conclusions:
The genotype-specific HPV concordance between parents and their newborn is suggestive for vertical HPV transmission. However, transmission from the father to the newborn remains more uncertain.
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