Groshan Fabiola asked:

Bird flu, also known as avian influenza is a disease which affects the birds, especially the poultry, in different extents. The bird flu is produced by subtypes of influenza A virus and it sheds in the wild birds which transmit the virus to the poultry. The H5N1 subtype is considered to be the most pathogenic virus from all the subtypes of influenza A virus.

Chicken, ducks and turkeys get infected if they get in contact with discharges from infected birds, infected water, and infected vehicles. The eggs can also contaminate the incubator if they are from infected hens.

The birds which survive the infection can spread the virus for another period of at least 10 days through secretions, discharges and feathers.

The virus can easily spread in the area if a contaminated bird is left to roam freely; if it drinks water from the place other birds drink, this way contaminating the water. Cars can spread the virus also from one place to another if they are not disinfected properly. Shoes, cages and clothing are also a way of spreading the virus.

Humans can get infected if they get into close contact with ill birds. People who transport poultry, who feed them and clean the place the birds live in, are exposed to the virus if the birds are infected. Eating cooked chicken meal is not dangerous as the virus gets inactivated at heat.

Until now human to human transmission was not encountered.

The governments are concerned that the virus could mutate and achieve the ability of transmitting itself from one person to another. This could lead to a global pandemic and millions of people might die. Also, if this problem is not solved quickly the poultry industry will suffer and the economy of the country will drop.

In chicken the bird flu gives these symptoms: diarrhea, muscle weakness, breathing problems, sudden deaths, ****** swelling, and a decline in the egg production.

In humans the symptoms of bird flu are: fever, muscle pain, sore throat and then cough, breathing problems and multi-organ failure in the last stage of the disease.

As there are so many diseases which manifest very much alike with bird flu the doctors must be very careful when diagnosing bird flu. If the patient got into close contact with a sick bird, or handles bird cages, laboratory tests will be done to see exactly if there is a bird flu infection.

There has not been yet discovered an effective vaccine against bird flu virus. The only thing humans can do is take a shot for a human influenza virus to prevent the recombination between the bird flu virus and human flu virus which could form a more threatening virus.

In order to prevent bird flu people must avoid getting into close contact with birds or their discharges; must not buy any living bird illegally as they are not controlled by the veterinaries, must report any suspect death of a bird to the authorities, and must disinfect properly after handling bird products.

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