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The top documents tagged [new antigenic variant]
Influenza Immunization Update 2007-2008 Sheila L. Palevsky, MD MPH Bureau of Immunization New York City Department of Health and Mental Hygiene October
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Avian Influenza "bird flu" Contagious disease of animals caused by viruses that normally infect only birds and pigs H5N1 can infect people (very rarely)
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Influenza Immunization Update 2007-2008
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