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About the Cover

Cover Figure


COVER Animal health experts, like this ornithologist in Croatia, are on high alert for signs of H5N1 avian influenza. Despite its rapid spread, H5N1 remains primarily a disease of birds. A special section beginning on page 379 examines obstacles to human-to-human transmission and options for responding to a possible pandemic, such as predictive computer models and "universal" vaccines. Photo: Matko Biljak/Reuters


[Table of Contents]

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