Barnardos says the Government needs to make investing more money in children a priority, if child abuse is to be prevented.
A homicide investigation is being held after a Whanganui girl died last week aged two months.
Barnardos advocacy manager Deborah Morris says New Zealand has one of the lowest levels of investment in children in the OECD.
Ms Morris says the Government and the public need to put their money where their mouths are if they want to stop children needlessly dying.
She says investment in children is an investment for the long term and encouraging people to write to their Members of Parliament to put pressure on them to prioritize children.