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Science 25 March 2005:
Vol. 307. no. 5717, p. 1865
DOI: 10.1126/science.307.5717.1865
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News Focus

INFECTIOUS DISEASES:
True Numbers Remain Elusive in Bird Flu Outbreak

Martin Enserink and Dennis Normile

Confounding reports about human cases of bird flu have fueled concerns about a pandemic. But the true spread of H5N1 remains unknown.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)