Zoonotic diseases: health aspects of Canadian geese

Abstract

Objective: Review zoonotic diseases associated with Canadian geese.

Study design: Review article: A review of the multiple physical, microbiologic and safety concerns, and methods used in controlling this potential problem.

Results: Over the last decade the Canadian goose population (protected by international treaties and protection acts) has increased rapidly such that in many cities they have become a pest rather than an admired wild bird. Their increasing numbers have caused a number of potential healthcare concerns including: physical, bacterial, parasitic, allergic and viral potential problems. The Canadian goose fecal droppings of one per minute have caused falls and the flying geese have caused air traffic accidents. Bacterial concerns, including botulism, salmonella and E. coli have all been reviewed and presented concerns. The viral Newcastle disease may be detected with hemagglutination studies and the Giardia psittaci parasites have been repeatedly found in their droppings. The Cryptosporidium parvum oocytes have been present on stool study.

Conclusions: Definite links to human infectious diseases have been difficult to prove. Revision of the current laws and new control programs must be developed.