Hello i would like to know what are the cause of oral thrush in babies?

Oral thrush: A baby usually gets oral thrush from passing thru the birth canal of an infected mother.

Opportunist germ: The yeast that causes thrush are around us everywhere.It is on surfaces and easily transferred to the mouth of a baby on fingers or contaminated objects. The babies constant feeding provides the moist sugary nutrients that the yeast thrive on. So food + available yeast means thrush can occur often.Some infants seem to have it constantly while others do not.