The travel industry was hard hit after the first reports of swine flu emerged from Mexico in the spring. Trips were canceled, destination weddings were moved elsewhere and flights were grounded as traveler demand plummeted. So the industry, already reeling from the effects of the recession, has reason to be cautious as the autumn flu season gets under way. Still, because the H1N1 pandemic strain, or swine flu, has generally not been more virulent than ordinary seasonal flu, airports, hotels and airlines are trying to find a balance between showing that they are taking substantive steps and not acting so aggressively that they set off a panic among travelers.

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