Emerging Infectious Disease ISSN: 1080-6059
Volume 16, Number 7—July 2010
Perspective
Persistence of Highly Pathogenic Avian Influenza Viruses in Natural Ecosystems
Figure

Figure. Comparison of natural versus artificial ecosystems showing different ecologic constraints for evolution of avian influenza virus (AIV).
Lessons from the History of Quarantine, from Plague to Influenza A
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