Food labelling changes due in 2016

Changes to food labelling announced in response to the frozen berries health scare won't come into effect until the middle of 2016.

The federal government is reviewing country-of-origin labelling following the frozen berries hepatitis scare, with a cabinet proposal due by August.

But Agriculture Minister Barnaby Joyce has told ABC radio on Tuesday it will take another year for reforms to be fully implemented.

More than 30 people across Australia contracted hepatitis over February and March after consuming the same brand of frozen berries.