I am abit confused with the vaccination package.

I know there is something like 5-in-1 or 6-in-1 package. So does that mean we only need to get either package and it will cover all the vaccinations required for the baby?

How much will vaccination package cost per year? I understand that we can use up to $400/yr (new scheme in 2012) from our medisave for baby's vaccination. Does that mean i can use $400 from either my or my hubby's medisave?

Example if the vaccination package cost $900/year, so we have to pay $500 by cash? Or can we use CDA to pay the remaining $500?