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Definition

A live birth who is less than 28 days old.

Comments

Context:
Perinatal.

Origin:
International Classification of Diseases and Related Health Problems, 10th Revision, WHO, 1992

Comments:
The neonatal period is exactly four weeks or 28 completed days, commencing on the date of birth (day 0) and ending on the completion of day 27. For example, a baby born on 1 October remains a neonate until completion of the four weeks on 28 October and is no longer a neonate on 29 October.

References

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