Just thinking out loud...

Humans are the only source of CMV. The virus is found in urine, saliva, nasal mucous, breast milk, vaginal secretions and semen of infected people.

Cytomegalovirus (CMV) is a common virus in the herpes​ virus family. Fifty per cent people have been infected by young adulthood and up to 85 per cent by 40 years of age.

So if most adults have CMV, aren't breastfeeding mothers passing it on to baby anyway?

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