The infant mortality rate in England and Wales for 2013 was the lowest ever recorded, new figures reveal.
The numbers from the Office for National Statistics (ONS) show there were 3.8 deaths per 1,000 births, down from 4.0 in 2012, and 10.1 in 1983.
Overall 2,686 babies aged under one died in England and Wales, down 226 from the number in 2012.
Infant mortality rates amongst babies with mothers aged 25 to 29 were the lowest, with 3.4 deaths per 1,000 births, while it was the highest for mothers under 20 years old at 6.1 deaths.
The ONS cause groups showed that immaturity-related conditions such as respiratory and cardiovascular disorders, were the most common cause of infant deaths in 2013, with 44% due to these causes.
As well as the age of mothers, the statistics revealed the infant mortality rate was higher amongst babies whose mothers were born outside the UK, with 4.2 deaths per 1,000.
The highest rates were for babies of mothers born in the Caribbean, 9.0, and mothers born in Central Africa - 8.3 deaths per 1,000 live births.
The statistics also revealed a drop in the number deaths amongst one to 14-year-olds.
In 2013, 946 children in England and Wales died before they turned 15, compared to 993 the previous year.
Between 1983 and 2013, the age-specific mortality rate for children aged one to 14 years fell by 66%, from 29 deaths per 100,000 population in 1983 to 10 deaths per 100,000 in 2013.