Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
H7N4
Introduction
H7N4 is a subtype of the species Influenza A virus (sometimes called bird flu virus).
A highly pathogenic strain of it caused a minor flu outbreak in 1997 in New South Wales, Australia in chicken. [1]