Tuesday, November 14, 2006

Potential human pandemic- H5N1 Bird Flu

Health professionals are concerned that the continued, rapid spread of the highly pathogenic avian H5N1 virus across eastern Asia and other countries represents a significant threat to human health. The H5N1 virus has raised concerns about a potential human pandemic because:
  • It is especially virulent and has caused severe disease in humans who have become infected
  • There has already been limited human-to-human transmission in Southeast Asia
  • It could evolve to become readily transmissible in humans
  • No human H5N1 vaccine is commercially available, despite continual advances in vaccine technology
  • Supplies of expensive antiviral medicines are very limited

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    As journalist Galen McBride summed it up for Pandemic Flu Awareness Week (Oct. 9-15), "A pandemic will occur if the H5N1 avian flu virus, currently circulating in more than 50 countries on three continents, mutates to acquire the ability to transmit efficiently from human to human. Flu viruses mutate millions of times a day and this virus has already achieved limited human-to-human (H2H) transmission as acknowledged by the World Health Organization (WHO)."


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