“Bird flu” is a phrase similar to “swine flu,” “dog flu,” “horse flu,” or “human flu” simply because it refers to a sickness caused by any lots of different strains of influenza viruses that have adapted to a specific organize. Out of the three pores and skin influenza viruses (A, B, and C), influenza A virus is a zoonotic infection with a natural reservoir almost entirely in at times the damage. Avian influenza, for most purposes, refers to the influenza A virus. Though influenza An is adapted to birds, it can also stably adapt and sustain person-to person transmission.Recent influenza research into the genes of the Spanish winter flu shows it to have genes adapted from both human and avian strains. Pigs can also be who have contracted human, avian, and swine influenza viruses, allow for mixtures of genes (reassortment) to create a new virus, which can cause an antigenic shift to new influenza A virus subtype which most everyone has started to little to no immune protection.
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