highly pathogenic h5n1
h5n1 transmissible between birds, facilitating potential global spread of h5n1. while h5n1 undergoes mutation , reassortment, creating variations can infect species not known carry virus, not of these variant forms can infect humans. h5n1 avian virus preferentially binds type of galactose receptors populate avian respiratory tract nose lungs , virtually absent in humans, occurring in , around alveoli, structures deep in lungs oxygen passed blood. therefore, virus not expelled coughing , sneezing, usual route of transmission.
h5n1 spread domestic poultry, both through movements of infected birds , poultry products , through use of infected poultry manure fertilizer or feed. humans h5n1 have typically caught chickens, in turn infected other poultry or waterfowl. migrating waterfowl (wild ducks, geese , swans) carry h5n1, without becoming sick. many species of birds , mammals can infected hpai a(h5n1), role of animals other poultry , waterfowl disease-spreading hosts unknown.
according report world health organization, h5n1 may spread indirectly. report stated virus may stick surfaces or kicked in fertilizer dust infect people.
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