Dedicated to eliminating the tragedy of sudden infant deaths


So what exactly is SIDS?


Important: Increasingly, as the years have gone by, fewer and fewer medical examiners and coroners have been using SIDS (Sudden Infant Death Syndrome) as a cause of death. If an infant dies unexpectedly, its death may be listed as SIDS, SUID, SUDI, SID, Cot Death, "Sudden plus...," "Death plus...," "Unknown," and many others. To learn more about "Cause of Death" designations, we highly recommend you read: Unexplained Infant Deaths. You may also contact us at any time.

Sudden Infant Death Syndrome (SIDS) is one of the leading causes of death among infants one month through one year of age in the United States. The National Institute of Child Health and Human Development (NICHD) defines SIDS as the sudden death of an infant under one year of age which remains unexplained after a thorough case investigation, including performance of a complete autopsy, examination of the death scene and review of the clinical history. SIDS is a diagnosis of exclusion, assigned only once all known and possible causes of death have been ruled out.


  • SIDS claims the lives of almost 2,500 infants in the US each year - that's nearly 7 babies every day.
  • SIDS is not caused by "baby shots."
  • SIDS deaths occur unexpectedly and quickly to apparently healthy infants, usually during periods of sleep.
  • SIDS is not caused by suffocation, choking, or smothering.
  • SIDS is not caused by child abuse or neglect.
  • SIDS is not contagious.
  • SIDS occurs in families of all races and socioeconomic levels.
  • SIDS cannot be predicted or prevented and can claim any baby, in spite of parents doing everything right.
Resource Center What Is SIDS/SUID?