Which factor is NOT listed as contributing to END entering the US?

Which factor is NOT listed as contributing to END entering the US?

• A. Illegal bird smuggling
• B. Endemic status among poultry in the US
• C. Some birds can be carriers
• D. Wild birds that cross into the US frequently carry this virus

Answer: (B)

Understanding how exotic diseases enter the United States relies on identifying pathways that bring a pathogen into the country. Illegal bird smuggling bypasses quarantine and import controls, introducing infected birds from abroad. Wild birds crossing borders can carry the virus and bring it into new areas or populations. Some birds can be carriers, shedding the pathogen and enabling spread even without showing symptoms. Endemic status among poultry in the US, however, means the disease is already present domestically and is not a new import path; it does not contribute to entry into the country.

Understanding how exotic diseases enter the United States relies on identifying pathways that bring a pathogen into the country. Illegal bird smuggling bypasses quarantine and import controls, introducing infected birds from abroad. Wild birds crossing borders can carry the virus and bring it into new areas or populations. Some birds can be carriers, shedding the pathogen and enabling spread even without showing symptoms. Endemic status among poultry in the US, however, means the disease is already present domestically and is not a new import path; it does not contribute to entry into the country.