Transmitted influenza A virus infection through contact (touching)with infected birds or surfaces contaminated with feces orsecretions of infected birds or contact with non-cooked poultry products. Continued to spread as the number of victims of human beings, and the greater the chance that mutated strain andtransported directly to other human beings. Influenza A viruseshave 8 pieces separate gene, allowing the viruses from differentspecies to mix and produce a new influenza A virus if viruses from two different types hitting the same person or animal.Example: if a pig were infected with influenza A human virus andinfluenza A Tiri at the same time occurs a complication of thevirus proliferating recently, giving the form of occasional -reshape (reassortment) of a new virus that carries genes of thevirus is human, but the HA and NA of the avian viruses - "antigenic shift "If the new virus caused disease in people, it may be transmitted from person to person easily, and here occurs an outbreak of influenza.
It could happen to (re-formation) in humans if the injured Baatarhinfluenza A Tiri and strain influenza A Adamic at the same time.Although the transmission of bird flu from human to human is very rare but it is possible to show strain a new lead to outbreaks ofinfluenza and one expects when going to happen.
التسميات
flu