Swine Flu Not As Infectious Among Young Adults As First Feared

But younger children were twice as likely to get sick, study of households shows

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In a related study in the same issue of the journal, Johns Hopkins researchers reported on an outbreak of H1N1 flu in a New York City high school. The scientists found that although the infection spread rapidly and widely, it did not cause severe illness for the most part.

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For more on H1N1 swine flu, visit the U.S. Department of Health and Human Services.

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