Health authorities have so far ruled out swine flu in all suspected cases

The Czech health authorities have ruled out 40 suspected cases of swine flu, twelve more people are being tested. The country has no confirmed case as yet. Chief hygiene officer Michael Vít said on Monday that further preventative measures were unnecessary at this point, but he urged people to cancel all non-essential trips to high-risk destinations. Another 100 or so tourists are still in Mexico and Mr. Vít said doctors would be on standby for their arrival. Six of those who arrived on Sunday remain in isolation.