NCHS - VSRR Quarterly provisional estimates for infant mortality
Provisional estimates of infant mortality [deaths of infants under 1 year per 1,000 live births], neonatal mortality [deaths of infants aged 0-27 days per 1,000 live births], postneonatal mortality [deaths of infants aged 28 days through 11 months per 1,000 live births], and death rates for the five leading causes of infant death.
