In the Tokoroa case, the toddler appeared to have wandered off through an unlocked or partially open ranch slider.
Plunket clinical advisor Allison Jamieson said those kind of incidents were rare, despite two recent episodes. However, she said some children could be real Houdinis and it was a good idea to explore your home from your child's point of view.
"Get down on the floor, at their level, and explore ways they might try to get out. Cat doors for example - they're not obvious to adults but they are to children"
She said adults shouldn't just concentrate on low areas.
"Some children are great climbers so it's a good idea to look at anything a child might be able to use to climb on or drag over to help them climb out a window or door."