Avian influenza
(aka bird flu, avian flu) is caused by a type of influenza virus that is hosted by birds, but may infect several species of mammals. It was first identified in Italy in the early 1900s and is now known to exist worldwide. A strain of the H5N1-type of avian influenza virus that emerged in 1997 has been identified as the most likely source of a future influenza pandemic. Strains of avian influenza virus may infect various types of animals, including birds, pigs, horses, seals, whales and humans. However, wild fowl act as natural asymptomatic carriers, spreading it to more susceptible domestic stocks. Avian influenza virus spreads in the air and in manure and there is no evidenDiagnosis
How to Recognise Avian Influenza
What to look for
Ruffled feathers
Soft-shelled eggs
Depression and droopiness
Sudden drop in egg production
Loss of appetite
Cyanosis (purplish-blue coloring) of wattles and comb
Edema and swelling of head, eyelids, comb, wattles, and hocks
Green diarrhoea
Blood-tinged discharge from nostrils
Incoordination, including loss of ability to walk and stand
Pin-point hemorrhages (most easily seen on the feet and shanks)
Respiratory distress
Increased death losses in a flock
Sudden death
Nasal discharges ce that the virus can survive in well cooked meat.