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Bird Flu

8 questions ยท Health & Medicine

Bird flu, also called avian influenza, is a form of flu that actually infects birds: but is regarded as one of the greatest dangers for the next worldwide flu pandemic. It is caused by certain influenza A viruses, the best-known of which is the subtype H5N1. For poultry such as chickens, ducks and turkeys the virus is highly contagious and often fatal; if it breaks out in a flock, usually all the animals are culled to stop the spread. Wild migratory birds carry the pathogen over great distances around the world. So far bird flu has only rarely jumped to humans, usually with very close contact to infected poultry: but when it happens, it often runs very severely and fatally in people. The great worry of experts is that the virus could change so that it becomes easily transmissible from person to person. Then the animal disease could become a dangerous new pandemic, against which almost no one would have defences. That is exactly why authorities worldwide monitor bird flu strictly, cull affected flocks and research vaccines: in the hope of getting ahead of such a crossing.

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4 of 8 questions with answers

Which animals does avian influenza mainly infect?

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Birds and poultry

For poultry it is often fatal.

๐Ÿ’ก Did you know? Migratory birds carry it around the world.

To which disease family does bird flu belong?

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To influenza (flu)

It is an influenza A virus.

๐Ÿ’ก Did you know? It is related to human flu.

Which subtype of bird flu is best known?

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H5N1

H and N stand for two surface proteins.

๐Ÿ’ก Did you know? Other subtypes can also become dangerous.

How often does bird flu jump to humans so far?

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Only rarely

Usually only with very close contact to poultry.

๐Ÿ’ก Did you know? But in humans it then often runs severely.

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