Which animals are put out and periodically tested for antibody conversion to arthropod-borne viruses such as St. Louis Encephalitis virus or Western Equine Encephalitis virus?

Which animals are put out and periodically tested for antibody conversion to arthropod-borne viruses such as St. Louis Encephalitis virus or Western Equine Encephalitis virus?

• A. Sentinel dogs
• B. Sentinel cows
• C. Sentinel horses
• D. Sentinel chickens

Answer: (D)

Sentinel surveillance relies on placing animals out in the environment to monitor virus activity by detecting seroconversion, signaling recent infection in the local mosquito-bird cycle. Sentinel chickens are the classic choice for this purpose because they’re kept in secure pens in areas of interest and can be bled periodically to test for antibodies against arthropod-borne viruses like St. Louis Encephalitis virus and Western Equine Encephalitis virus. When a chicken shows a new antibody response, it indicates active transmission in that area, which helps public health respond with mosquito control and community alerts. Chickens are inexpensive, easy to maintain in groups, and their immune response provides clear, detectable evidence without the ethical and practical complications of testing animals that might suffer severe illness. While other animals can be monitored in some programs, sentinel chickens are the most practical and widely used option for this type of antibody-conversion surveillance.

Sentinel surveillance relies on placing animals out in the environment to monitor virus activity by detecting seroconversion, signaling recent infection in the local mosquito-bird cycle. Sentinel chickens are the classic choice for this purpose because they’re kept in secure pens in areas of interest and can be bled periodically to test for antibodies against arthropod-borne viruses like St. Louis Encephalitis virus and Western Equine Encephalitis virus. When a chicken shows a new antibody response, it indicates active transmission in that area, which helps public health respond with mosquito control and community alerts. Chickens are inexpensive, easy to maintain in groups, and their immune response provides clear, detectable evidence without the ethical and practical complications of testing animals that might suffer severe illness. While other animals can be monitored in some programs, sentinel chickens are the most practical and widely used option for this type of antibody-conversion surveillance.