Take the rental contract, the birth certificate and go to for example to Al Baraha Hospital. Register there for a health card. The fees for that are 110AED per year for kids till 10 years old and with the issued health card you get any vaccinations for free in the governmental owned hospitals.
That’s it. Pretty easy to do and compared to the vaccinations which are on 550AED each in a private clinic the left over money can be invested in kids toys
Hospitals you can use are for example the Latifa Hospital and the Rashid Hospital. You can apply even if the visa is on Abu Dhabi like in our case, for that you just need the rental contract to proof you are living in Dubai.
More infos: (LINK)
There is more actual information in this new article (LINK)