Some international airports already are screening passengers for the H1N1 flu virus, and U.S. fliers could eventually be subject to similar measures. Many domestic airports are warning passengers against traveling if they have flu-like symptoms, and the government is warning of possible quarantines if someone on a flight appears to be sick with swine flu. Though no airports in the U.S. are currently using passive screening techniques, a TSA official says his agency is monitoring the spread of the virus. "We will continue to work with our colleagues in the public health community to plan for any health contingencies that may arise," he says.
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