Table 1.

Strains of avian influenza A virus in documented human infections (1959–2006)

Strain	Symptoms
H7N7	Respiratory (pneumonia – respiratory symptoms in fatal case), Conjunctivitis
H5N1	Respiratory (pneumonia) - respiratory insufficiency
H9N2	Influenza like illness
H7N2	Respiratory symptoms
H7N3	Conjunctivitis