Now, if babies are born via C-section, that early phase of colonization is greatly altered, because instead of vaginal, fecal and skin bacteria of the mother, mainly only skin bacteria enter the infant gut.
Maka, bila bayi lahir melalui operasi sesar, fase awal kolonisasi akan sangat berbeda, karena bukannya bakteri vagina, tinja, dan kulit dari si ibu, kebanyakan hanya bakteri kulit yang memasuki usus bayi.