Final answer:
The recommended compression-to-ventilation ratio for infants and children is 30:2.
Step-by-step explanation:
The recommended compression-to-ventilation ratio for infants and children is **30:2**.
This means that for every 30 compressions, there should be 2 ventilations.
For example, if you are performing CPR on an infant or child, you would give 30 chest compressions followed by 2 rescue breaths, and then repeat the cycle.