Are newborn babies infected?

In The Walking Dead we learn early on (S2 if memory serves) that everyone is infected and the infection only takes effect after death but I don't recall if new born babies are infected.

My question in about babies conceived after the 'outbreak/epidemic' (post Rick waking up out of his coma) are born infected, so not directly asking about Judith as she was conceived before.

I binged watched so may not have absorbed every little detail and still haven't watched S9 yet as can't stand waiting a week between episodes so no spoilers please.