"Influenza A virus subtype H5N1" . "Medical terminology" . "Medical aspects of death" . "Agricultural health and safety" . "Epidemiology" . "Causes of death" . "Animal virology" . "Poultry diseases" . "Respiratory physiology" . "Respiratory diseases principally affecting the interstitium" . "Intensive care medicine" . "Avian influenza" . "Subtypes of Influenza A virus" . "Bird diseases" . "Infectious diseases" . "Syndromes affecting the respiratory system" .