Of all the emerging and potentially pandemic viruses, the highly pathogenic avian influenza (HPAI) virus H5N1 is one of the fiercest. First found in Hong Kong in 1997, it has a 60 per cent mortality rate when transmitted to humans. As of August, the World Health Organization has counted 878 human cases and 458 deaths
France stacks the deck against bird flu but risks issues
France has launched its bird vaccination scheme amid fears of repeat H5N1 outbreaks
