The H1N1 virus that caused a pandemic is now a regular human flu virus and continues to circulate seasonally worldwide. From the archives of Press Portrait Service.


The H1N1 virus that caused a pandemic is now a regular human flu virus and continues to circulate seasonally worldwide. From the archives of Press Portrait Service.


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Photo credit: © David Cole / Alamy / Afripics
License: Licensed
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Keywords: flu, h1n1, influenza, virus