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2004, Number 1

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Rev Mex Patol Clin Med Lab 2004; 51 (1)

Avian influenza The first pandemic of the 21th century?

Barriga AG, Arumir EC, Mercado GF

Language: Spanish
References: 23
Page: 16-23
PDF size: 160.68 Kb.


ABSTRACT

In the last two centuries several influenza pandemics has exacted a high death toll from human populations, the most devastating pandemic, the so - called Spanish influenza of 1918-1919, caused deaths of 20 to 50 million people worldwide. In three occasions in the recent past: 1997, 1999, 2003, and starting in January of this year outbreaks of human cases of influenza with a non recombinant virus strain of avian influenza (H5NI) of inunsual pathogenicity and mortality (75%), transmitted directly from birds to humans has been reported in Thailand and Vietnam with preceding and simultaneous avian influenza outbreaks in Cambodia, China, Hong Kong, Indonesia, Japan, Laos, South Korea, Thailand and Vietnam with devastating effects on his poultry industry. This situation could be the origin of a new influenza pandemic in humans. Here we review current knowledge about the ecology, interspecies transmission, laboratory diagnosis, clinical symptoms, prevention, treatment, and pathogenicity of avian influenza viruses and the human health threats posed by these pathogens.


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