Denmark expected to be able to treat any number of possible flu victims with its regular facilities when around 10,000 international delegates descend on its capital for the summit, the head of Denmark's infectious disease institute SSI, Nils Strandberg, told AFP.

"We already welcome thousands of visitors from around the world for various conferences and we don't think we need to adopt special measures for this summit," he said.

The delegates attending the climate conference "do not present a particular risk, no more than the hundreds of thousands of foreign tourists and Danes returning from travel abroad each year," he said.

Strandberg stressed that "there is no epidemic at the time being" in the Scandinavian country, where some 425 cases of the A(H1N1) virus have been reported so far.

However, he would not exclude the possibility that the virus "could explode this winter, in December during the summit for example."

He stressed that Denmark "has the capacity to treat any Danes or visitors in hospital for the most serious cases."

For less serious cases, "in the event of flu-like symptoms, it's enough to stay in bed at home or at the hotel until it is over and be treated by a doctor," he added.

Staff in charge of organising the summit will however be vaccinated in November against swine flu in order to ensure that the summit can go ahead as planned, a Danish foreign ministry official told AFP.