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. 2009 Jul 9;361(2):115-9.
doi: 10.1056/NEJMp0904572. Epub 2009 May 27.

Geographic dependence, surveillance, and origins of the 2009 influenza A (H1N1) virus

Vladimir Trifonov  1 , Hossein Khiabanian, Raul Rabadan
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Free article

Geographic dependence, surveillance, and origins of the 2009 influenza A (H1N1) virus

Vladimir Trifonov et al. N Engl J Med. .
Free article
No abstract available

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