health

Avian influenza is similar to seasonal influenza. The person develops a
cough, a fever, an inflammation of the tissues lining the eyelid, a runny
nose, and a headache. The incubation period in humans varies between
two and seventeen days, with five days being the most common length
of time. In fatal cases, the patient begins to have trouble breathing and
may cough up blood about five days after symptoms of illness appear.
Death usually results from viral pneumonia.
Some patients also have abdominal pain, vomiting, and bloody diarrhea
in addition to respiratory symptoms.