Avian flu is caused by avian influenza viruses. The mode transmission of avian flu to humans is by direct contact with infected birds, their droppings or the surfaces contaminated with their secretions. The symptoms are same as any other flu such as fever, cold, joint pain etc.
Prevention
Try to remove the infected birds (suffering bird flu) from uninfected birds to prevent the spreading of infection among the other birds
Avoid any contact with other people to prevent it from spreading.
Consult a doctor.