The largest age group infected is among those aged five to 17, at 49 per cent, with those between ages 18 to 54 in second at 30 per cent.

Measles was considered eradicated in the United States in 2000. For the first time in 25 years, cases have reached a new high.

The U.S. is having its worst year for measles in three decades – and we're seeing the effects in South Carolina and Georgia.