General information regarding Avian Influenza (Bird Flu) by Groshan Fabiola

The World Health Organization (WHO) makes reports and updates regarding new human cases of infection with bird flu. The only subtype that can cause severe illness to people is Influenza A /H5N1 virus, initially it affects chickens, ducks and other birds by the process of mutation they can become highly pathogenic. Because highly pathogenic viruses can survive for long periods in tissue, water and in the environment, especially when temperatures are low is transmitted very easily in chickens and other birds through direct contact with feces and secretions from infected birds, eggs, feed, water, cages equipment, vehicles and clothing. Public health authorities monitor human illnesses associated with avian influenza. In Hong-Kong occured for the first time infection both in humans and poultry and were killed about 1.5 million chickens.

In China and Hong-Kong avian influenza A (H9N2) virus infection affected two children who recovered. The source was unknown, but suspected the poultry.

In Virginia, 2002 an outbreak of H7N2 among poultry was descovered but,with no human victims. Canada, 2004: human infections among poultry workers with H7N3.

Thailand and Vietnam human infections with H5N1. Azerbaijan, Cambodia, China, Djibouti, Egypt, Indonesia, Iraq, Thailand, Turkey, 2006: Human infections with H5N1 occurred as a result of contact with infected poultry and with infected death swangs. Cambodia, China, Indonesia, Thailand and Vietnam, 2005 two persons have been infected with H5N1 as result of consuming uncooked duck blood. China two cases of patogenic infections with avian influenza A (H5N1) have been confirmed in a family travelling through China. Netherlands, 2003 were reported outbreaks of influenza A (H7N7) in several farms, after which in pigs and people, 90 people were confrmed with bird flu virus H7N7 in association with cases of eye conjunctivitis, one death occured at a veterinarian with acute respiratory distress syndrome and other complications after having direct contact with infected poultry. In New York, 2003 there has been registered one case a patient with respiratory symptoms which recovered in few weeks and tests confirmed it had been avian influenza A (H7N2) virus. Signs and symptoms of bird flu in humans are similar to other influenza viruses: sore throat and cough, fever, muscle weakness and/or pain, eye infections, with life-threatening complications such as: severe viral pneumonia, respiratory distress syndrome, multi- organ failure.

U.S. Food and Drug Administration suggests the following antiviral agents supposed to prevent and treat avian influenza: amantadine, rimantadine, oseltamivir, and zanamivir. They may be not always effective it has been demonstrated that viruses are resistent to amantadine and rimantadine. In the United States they are not in use any more for the treatment or prevention (prophylaxis) of influenza A. Specialists are monitoring the resistence of avian influenza A viruses to influenza antiviral medications.

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For more information about bird flu or even about bird flu vaccine please review this page http://www.bird-flu-info-center.com/bird-flu-vaccine.htm

Bird flu is still a threat for humanity by Groshan Fabiola

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, facial 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.

About the Author
For more information about bird flu or even about symptoms of bird flu please review this page http://www.bird-flu-info-center.com/symptoms-of-bird-flu.htm