ADJ. early The vaccination is given in early infancy.
VERB + INFANCY survive (beyond) Their first child did not survive infancy. | die in She died in infancy.
PREP. during/in ~ Deaths during infancy have fallen dramatically in the last hundred years. (figurative) The new company is still in its infancy. | from ~ from infancy to late childhood | since (sb's) ~ Since her infancy she has been a healthy baby. | throughout (sb's) ~ He was ill many times throughout his infancy.