An Indonesian child receives a polio vaccination in Jakarta
The World Health Organization has confirmed more than 20 new cases of polio in Indonesia, bringing the total in the two-month outbreak to 100.

The latest cases were found in the provinces of Banten and West Java.

One case was recently reported on Sumatra Island, indicating the sometimes crippling disease has spread beyond the main island of Java.

Millions of children in Indonesia have already received emergency vaccinations against polio, which has reappeared in the country after a 10-year absence.

Indonesia is one of several countries where polio has re-emerged since 2003, and the first outside Africa and the Middle East. The outbreak has been traced to northern Nigeria, where hard-line Muslims boycotted a vaccination campaign.

Some information for this report provided by Reuters and AP.