The biggest challenge is public trust.

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

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.

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

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