Collocations for infancy - noun

early
The vaccination is given in early infancy.

survive (beyond)
Their first child did not survive infancy.

die in
She died in infancy.

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.