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  • Title: Influenza: forecast for a pandemic.
    Author: de la Barrera CA, Reyes-Terán G.
    Journal: Arch Med Res; 2005; 36(6):628-36. PubMed ID: 16216644.
    Abstract:
    Recently, great speculation about a possible influenza pandemic has been made. However, the facts supporting the possibility of this threat are less discussed. During the last decade highly pathogenic strains of avian influenza virus, including the H5N1 subtype, crossed the species barriers from birds to humans and caused fatal disease. The Z strain of H5N1 subtype is characterized by pathogenicity to a larger number of animal species and by resistance to the older class of antiviral drugs. At present, two out of three general conditions for the onset of a pandemic have been met; namely, the emergence of a new virus and its ability to replicate in humans causing serious illness. Should the virus achieve efficient human-to-human transmission, the next influenza pandemic might occur. This review addresses these biological and epidemiological aspects of influenza in the context of history and characteristics of previous epidemics, as well as concrete actions that can be undertaken considering current understanding of influenza pathogenesis, treatment, and control possibilities.
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