Sudden unexpected death in infancy (SUDI and SIDS)

Sudden unexpected death in infancy (SUDI) is when a baby under 12 months dies suddenly. It is rare, but it can feel worrying to think about. The good news is there are simple things you can do to help keep your baby safe while they sleep. 

 There are two main types of SUDI: 

  1. Sudden infant death syndrome (SIDS)- when a baby dies suddenly with no clear cause. This usually happens during sleep.
  2. Fatal sleeping accident– when a baby dies because they become trapped, strangled, or can’t breathe properly while sleeping. 

See Newborn sleep for more information.

 

Which babies might be at higher risk?

Some babies have a slightly higher chance of SUDI, like those who: 

  • are under 12 months old
  • born early (premature)
  • born with a low birth weight
  • have other health problems
  • are around cigarette smoke or vaping before or after birth 

Even if your baby is in one of these groups, remember that most babies grow and stay healthy. Especially with safe sleep habits. 

How to lower your baby’s risk

You can do a lot to help keep your baby safe while they sleep: 

  • Put your baby in a safe cot with a firm, flat mattress
  • Keep your baby’s cot in your room for the first 6–12 months
  • Always place your baby on their back to sleep
  • Keep their face and head uncovered
  • Keep your home smoke-free before and after birth 

Most babies sleep safely and stay healthy. If you’re ever unsure or have questions, talk to your child and family health nurse or doctor. They are there to help and support you.