Queensland's opposition says the state is the worst in the nation when it comes to investigating child abuse.

The Liberal National Party's child safety spokesperson Ros Bates has attacked the Labor government for failing to follow up 46 per cent of child abuse reports within appropriate time frames.

Ms Bates' criticism comes a month after the death of abused Caboolture toddler Mason Lee and she says the state is on the verge of a child safety crisis.

AAP

LNP Child Safety spokeswoman Ros Bates. Credit:Harrison Saragossi

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