A spokesman said no cases had been confirmed as swine flu
Four ball boys and girls at the Wimbledon tennis championships have shown symptoms of swine flu.
The All England Club, which organises the competition, confirmed that some staff were showing flu symptoms. They were told to stay at home.
But spokesman Henry O'Grady said no cases were confirmed as swine flu, adding: "They haven't been tested for swine flu and they're not going to be."
People with flu symptoms were asked not to visit Wimbledon as spectators.
The All England Club did not confirm the age or gender of those affected.