A 19-year-old man tested positive for the A(H1N1) influenza virus on arrival on Saturday, they said.

He was quarantined at a state hospital for treatment, and the 26 other members of the party were told they would be isolated at a hotel in Suwon, south of Seoul, for seven days, according to South Korea's health ministry.

'The week-long isolation of those who showed no sign of symptoms is a precautionary step as the swine flu has a latent period,' a ministry official handling the case told AFP.

He said the ministry had decided to ban the squad, which includes coaching staff, from taking part in this week's Asia-Pacific lacrosse tournament in Suwon, adding it was in talks with the Australian embassy here.

The health ministry on Sunday said the latest confirmed case of swine flu took the number of confirmed infections in the country to 61.

Swine flu has exploded this month in Australia - the fifth most affected country worldwide. -- AFP