Y chromosome DNA in women’s vaginal samples as a biomarker of recent vaginal sex and condom use with male partners in the HITCH cohort study

摘要

BackgroundY chromosome DNA from male epithelial and sperm cells a detected in vaginal samples after unprotected sex in experimental studies. We assessed the strength of this association in an observational setting to examine the utility of Y chromosome DNA as a biomarker of recent sexual behaviors in epidemiological studies.