What is Bird Flu

Bird flu is a contagious disease of animals that is caused by viruses. This virus is called avian influenza. This virus normally infects only birds. It is highly species-specific and on rare occasions cross the species barrier to infect humans. The infection with avian influenza virus causes two main forms of disease, distinguished by low and high extremes of symptoms. The low pathogenic form commonly causes only mild symptoms such as ruffled feathers or a drop in egg production. These may easily go undetected. The highly pathogenic form is far more serious. It spreads very rapidly through poultry flocks, causes disease affecting multiple internal organs, and has a mortality rate of 100%, which is often reached within 48 hours. How this virus spreads is still unknown. The role of migratory birds is not fully evident. Wild waterfowl are believed to be the natural reservoir of all influenza viruses. They have probably carried influenza viruses for centuries. Considerable circumstantial evidence suggests that migratory birds do bring in low pathogenic viruses to poultry flocks, which later mutates to highly pathogenic form. Any kind of widespread persistence of this virus in poultry population poses two main risks for human health. The first is the risk of direct infection when the virus passes from poultry to humans, resulting in very severe disease. The other that is of even greater concern is when the virus gets enough opportunities and changes into a form that is highly infectious for humans and spreads easily from person to person. This may even turn into pandemic flu and can be fatal. The drugs available for treatment of bird flu are not many. For cases of human infection a class of antiviral drugs, the amantadine and rimantadine, can potentially be used against pandemic influenza. The famous pharmaceutical company ROCHE's bird-flu drug Tamiflu is also available.

Norma Dsouza is a Health and Fitness Consultant. For more details please visit: www.checkflu.com