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Influenza A H5N1 UPSC NOTE

 Why in news

  • Avian influenza (bird flu) is a highly contagious viral infection that primarily affects birds

  • An emerging new lineage 2.3.4.4b of avian influenza has been spreading across the globe since late 2020.

  • Its carried by migratory birds following specific routes. 

  • This panzootic has a significant effect on the avian population.

  • Its disastrous consequences to the ecology and significant economic loss affecting poultry across the world. 

  • The virus can infect mammals from birds causing spillovers.

  • In recent years, several such instances of spillovers spanning over 200 species have been noted.

  • The most recent being polar bears in Antarctica.

  • Close contact with infected animals could mean the virus could spill over infecting humans and this comes with a significantly large fatality rate.

Influenza A H5N1

  • Influenza A H5N1, also known as avian influenza or bird flu.

  • It is a subtype of the influenza A virus that can cause illness in humans and many other animal species.

  • Wild aquatic birds are the natural reservoir for avian influenza A viruses.

  • A highly pathogenic strain of avian influenza A(H5N1) is called HPAI A(H5N1). 

  • This is the most dangerous strain and can cause severe illness and death in birds.

  • Spreads among birds through contact with infected birds or their droppings.

  • Rarely transmitted from person to person. 

  • Most human infections have resulted from direct contact with infected birds or their environment.

  • Antiviral medications can be used to treat influenza infections, but they are most effective if given early in the illness.

  • Avoiding contact with sick birds or their environment is the best way to prevent infection

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Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Influenza A H5N1 UPSC NOTE
Influenza A H5N1 UPSC NOTE
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