That is why today's house-to-house drive can be make or break.

The first round today is critically, critically important not just for Indonesia, but for the entire region. This is an effort to stop polio virus here but also to stop it breaking out causing a regional infection.

If it isn't decisively addressed, you're going to continue to miss children ... and it could have catastrophic consequences.

It's not totally unexpected on the first day of a campaign like this,

The biggest problem right now is confusion over whether sick children can be vaccinated.

The biggest challenge is public trust.