Type A flu, often known as influenza Although viruses can infect animals, it is more frequent for humans to suffer from the symptoms of this form of flu. This flu virus frequently infects wild birds. The type A flu virus is continually evolving and is often to blame for big flu outbreaks.
Although the illness is infrequent, strains of all subgroups of theinfluenza A virus
have been identified from wild birds.
Some influenza A virus strains cause serious sickness in domestic chickens
and, in rare cases, in humans
. Viruses are sometimes transferred from wild aquatic birds to farmed poultry
, which can lead to outbreaks or pandemics
of human influenza. Influenza A viruses are single-stranded, divided, negative-sense RNA viruses. The various variants are identified with H number and N number. There are eighteen distinct H antigens and 11 distinct N antigens.
Each viral subtype has transformed into a range of strains with varying pathogenic patterns;
some are harmful to one species but not others, while others are pathogenic to both. The influenza virus
that has been cleaned and refined A human vaccine
has been produced, and several nations have stockpiled it in preparation for rapid delivery to the public in the case of an avian influenza pandemic. Avian influenza is also referred to as bird flu and avian flu.
Researchers reported the development of an antibody that is effective againstall strains of the influenza A virus in 2011.