Death of a liveborn child under one year of age. Infant deaths are the sum of neonatal and postneonatal deaths.

Death of a liveborn infant under one year of age. The term excludes fetal death.

sudden and unexpected death of an apparently healthy infant during sleep

Death of an individual less than one year of age. Infant deaths are further classified as neonatal deaths and postneonatal deaths. (See also neonatal death and postneonatal death.)

A death of a live-born infant under one year of age.

Death of an infant less than 1 year old. Neonatal death is the death of an infant less than 28 days after birth; postneonatal death is the death of an infant between 28 days and 1 year after birth.

Death of an infant within a year of birth.

Any death at any time from birth up to, but not including, the first year of age(364 days, 23 hours, 59 minutes from the moment of birth).