You may have heard the phrase ‘bird ‘flu’ quite a lot in the news lately. What is it all about? The bird flu that is spreading through parts of Asia is a disease caused by the avian influenza virus.
It mainly affects birds. So far several million chickens have either died or had to be killed because of the disease. The virus has also been passed to humans and a small number of people have died after catching it.
Since 2003, about 60 people in south-east Asia are thought to have died from a strain of bird flu called H5N1. The virus mainly affects birds, and the people who have been affected mostly worked with birds. It's not the same virus that we get when we talk about having flu in the UK. You cannot get bird flu from eating cooked birds, like chicken.
Greece is the latest country to confirm it has the bird flu virus, although scientists do not know whether it is the deadly type of the disease.
Experts don't think the disease will cause problems in the UK this winter. However, they are still working on ways to fight an outbreak. It's thought that vaccines could be developed to fight against the virus. The virus would become dangerous if it mixes with human flu to create a new type of illness which is difficult to treat at the moment.
It's hard to control the spread of the virus because many birds fly long distances to find warm weather.
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