Editing Pathogen transmission (section)

====Mother-to-child transmission====
[[File:Brocky, Karoly - Mother and Child (1846-50).jpg|thumb|Brocky, Karoly - Mother and Child (1846-50)]]
{{Main|Vertically transmitted disease}}
This is from mother to child (more rarely father to child), often ''in utero'', during [[childbirth]] (also referred to as [[perinatal infection]]) or during postnatal physical contact between parents and offspring. In mammals, including humans, it occurs also via [[breastfeeding|breast milk]] (transmammary transmission). [[Infectious disease]]s that can be transmitted in this way include: HIV, hepatitis B and syphilis. Many mutualistic organisms are transmitted vertically.<ref name="auto">{{cite journal| vauthors = Ebert D |date=2013|title=The Epidemiology and Evolution of Symbionts with Mixed-Mode Transmission|journal=Annual Review of Ecology, Evolution, and Systematics|volume=44|pages=623–643|doi=10.1146/annurev-ecolsys-032513-100555}}</ref>