H5N1 and Scotland: Trivia – Rasta Livewire. Avian Flu Talk: British microbiologist discusses H5N1. Influenza A virus subtype H5N1. According to the World Health Organization and United Nations Food and Agriculture Organization, H5N1 pathogenicity is gradually continuing to rise in endemic areas, but the avian influenza disease situation in farmed birds is being held in check by vaccination, and so far there is "no evidence of sustained human-to-human transmission" of the virus.[3] Eleven outbreaks of H5N1 were reported worldwide in June 2008 in five countries (China, Egypt, Indonesia, Pakistan and Vietnam) compared to 65 outbreaks in June 2006 and 55 in June 2007.
The global HPAI situation significantly improved in the first half of 2008, but the FAO reports that imperfect disease surveillance systems mean that occurrence of the virus remains underestimated and underreported.[4] In July 2013 the WHO announced a total of 630 confirmed human cases which resulted in the deaths of 375 people since 2003.[5] Overview[edit] Signs and symptoms[edit] Avian influenza - PubMed Health.