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"Every year, like clockwork, the flu invades home and workplace. The flu is not just an unwelcome visitor, but is more serious than you may think. Take this quiz and learn how the flu can ruin your plans during the winter months."^^<http://www.w3.org/2001/XMLSchema#string>
<http://health.howstuffworks.com/diseases-conditions/cold-flu/flu-quiz5.htm>