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===Overview===

===Overview===

Avian influenza (AI) also known as “bird flu” is an infectious viral disease of birds (especially wild water fowl such as ducks and geese), often causing no apparent signs of illness. AI is very contagious among birds and can cause a wide spectrum of symptoms, ranging from mild illness (which may pass unnoticed), to a rapidly fatal disease that can cause epidemics of severe illness and death. The virus normally spreads from bird’s saliva, nasal secretions, and faeces. Susceptible birds may become infected with avian influenza virus through direct contact with infected waterfowl or other infected poultry, or through contact with surfaces or materials  that have been contaminated with the virus. Link to pictures

[[Avian Influenza|Avian influenza (AI)]] also known as “bird flu” is an infectious viral disease of birds (especially wild water fowl such as ducks and geese), often causing no apparent signs of illness. AI is very contagious among birds and can cause a wide spectrum of symptoms, ranging from mild illness (which may pass unnoticed), to a rapidly fatal disease that can cause epidemics of severe illness and death. The virus normally spreads from bird’s saliva, nasal secretions, and faeces. Susceptible birds may become infected with avian influenza virus through direct contact with infected waterfowl or other infected poultry, or through contact with surfaces or materials  that have been contaminated with the virus. Link to pictures

<font color="red">'''Humans''' - Avian influenza viruses do not normally infect humans. However, there have been instances of certain highly pathogenic strains causing severe respiratory disease in humans. In most cases, the people infected had been in close contact with infected poultry or with objects contaminated by their faeces. Nevertheless, there is concern that the virus could mutate to become more easily transmissible between humans, raising the possibility of an influenza pandemic. In 2005 there was an outbreak of a strain of avian influenza known as H5N1, and in the last month there have been reports from China of human deaths from a new strain, H7N9. Link</font color>

<font color="red">'''Humans''' - Avian influenza viruses do not normally infect humans. However, there have been instances of certain highly pathogenic strains causing severe respiratory disease in humans. In most cases, the people infected had been in close contact with infected poultry or with objects contaminated by their faeces. Nevertheless, there is concern that the virus could mutate to become more easily transmissible between humans, raising the possibility of an influenza pandemic. In 2005 there was an outbreak of a strain of avian influenza known as H5N1, and in the last month there have been reports from China of human deaths from a new strain, H7N9. Link</font color>