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Avian flu is caused by a form of influenza virus that usually infects birds. The few people who have become sick or died from the bird flu had direct contact with infected birds. The strain of bird flu that has infected people in Asia and the Middle East recently is called H5N1, which cannot be spread from person to person. How Does Bird Flu Spread ? Migrating birds, like ducks, geese, and swans, can carry and spread the virus to other birds - often across country borders. Symptoms of Bird Flu in Humans fever, cough, sore throat, muscle aches. But this flu can also lead to eye infections, pneumonia, breathing problems. Protection
Why Are People So Worried About It ? Experts are concerned that the H5N1 strain of bird flu could
mutate (change) into a new form that can spread from person to person.
- Bird Flu = Avian flu: أنفلونزا
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