Source: https://www.cdc.gov/reproductivehealth/maternalinfanthealth/infantmortality.htm
The definition of infant mortality given here is the death of an infant before his or her first birthday. The five leading causes of infant death in 2018 were:
Congenital birth defects Preterm birth and low birth weight Injuries (e.g., suffocation) Sudden infant death syndrome (SIDS) Maternal pregnancy complications
There were 21,000 infant deaths in the United States of America.
66% of traumatic deaths in pediatric patients is from traumatic brain injury.