They eat bats there. They also pick up dead animals for lunch.
I am aware of that. Several Ebola outbreaks have resulted because someone found a dead monkey or ape in the forest, and decided to eat it.
How the little boy was exposed, however, is anyone’s guess. I doubt he was trying to eat dead animals that he found... kids his age put many things in their mouths, but don’t usually eat them. They won’t even eat food you place in front of them. He could have put a contaminated stick in his mouth, for all we know.