Study: Cryopreserved donor sperm contains G. vaginalis (BV) seeds

Sperm and BV

A BV researcher heard from a woman who started getting BV symptoms after being artificially inseminated at a clinic. This prompted the 2010 study (Swidsinski et al) on frozen donor sperm in Germany that found three out of the 20 semen samples contained cohesive Gardnerella vaginalis, the bacteria responsible for the biofilm that causes bacterial vaginosis.

(We have written a book on how to get rid of the biofilm, here and a book for men who have been in contact with BV-laced vaginas – you need treatment too.)

There was some suggestion that IVF might have been a transmission method that needed further research, since G. vaginalis is sexually transmissible between male and female partners. Nobody thought to look in the freezer.

It is now understood to be a sexually transmissible infection, but it can also exist in those who are not sexually active due to the natural make-up of the vaginal microflora.


Jessica Lloyd - Naturopathic Practitioner, BHSc(N)

Jessica Lloyd - Naturopathic Practitioner, BHSc(N)

Jessica is a degree-qualified naturopath (BHSc) specialising in vulvovaginal health and disease, based in Melbourne, Australia.

Jessica is the owner and lead naturopath of My Vagina, and is a member of the:

  • International Society for the Study of Vulvovaginal Disease (ISSVD)
  • International Society for the Study of Women's Sexual Health (ISSWSH)
  • National Vulvodynia Association (NVA) Australia
  • New Zealand Vulvovaginal Society (ANZVS)
  • Australian Traditional Medicine Society (ATMS)
Read more about Jessica and My Vagina's origin story.