Oceania Rugby said the decision was made after the team were forced into quarantine for 18 days – which would run through the tournament.
One of the players who arrived in Fiji was suspected of having measles, and tests were conducted on Sunday.
A senior official at the Fiji health ministry, Aalisha Sahukan, said the risk of infection was deemed too high for the Tongan team to participate.
The decision has forced a new schedule to be drawn up for the rest of the tournament.
Source:
RNZ Pacific