A<unk>  is an infection caused by pathogens (such as bacteria and viruses) that use mother-to-child transmission, that is, transmission directly from the mother to an embryo, fetus, or baby during pregnancy or childbirth. It can occur when the mother has a pre-existing disease or becomes infected during pregnancy. Nutritional deficiencies may exacerbate the risks of perinatal infections.
Vertically transmitted infection
Intentional contagion of infection
Blood-borne disease
Opportunistic infection
Environmental disease
Laboratory-acquired infection
Sexually transmitted infection
Clonally transmissible cancer