In previous research, Syrjanen, a pathologist at the University of Turku, and colleagues found evidence of transmission of HPV from an infected mother to her newborn infant. No statistically significant differences in species richness Fig 4A or diversity Fig 4B were detected between the HPV positive and HPV negative breast milk samples, nor did we observe any statistical differences in microbial compositions at phylum or at family levels in the breast milk samples Fig 4C and 4D. Effect of Mycoplasma hominis and cytomegalovirus infection on pregnancy outcome:
The studies that do exist show a low risk of transmission. The organization recommend exclusive breastfeeding with no other sources of nutrition for about 6 months.