Which virus is used as an example for sentinel testing of arthropod-borne viruses?

Which virus is used as an example for sentinel testing of arthropod-borne viruses?

• A. Rabies virus
• B. St. Louis Encephalitis virus
• C. West Nile virus
• D. Zika virus

Answer: (B)

Sentinel testing of arthropod-borne viruses relies on using sentinel hosts to signal when a virus is circulating in an area. St. Louis Encephalitis virus has long been used as a classic example because it has a well-documented transmission cycle involving birds and mosquitoes in North America, and public health programs have historically used sentinel birds (such as chickens) with serologic testing to detect recent exposure. This approach lets researchers spot increasing arbovirus activity early by measuring antibodies in sentinel animals, providing a warning that guides mosquito control efforts and public health actions before human cases occur. Rabies virus isn’t vectored by arthropods, so it doesn’t fit the sentinel testing framework for arboviruses. West Nile virus and Zika virus are also arboviruses and can be monitored in sentinel systems, but the traditional teaching and historical surveillance examples highlight St. Louis Encephalitis virus as the standard exemplar for this approach.

Sentinel testing of arthropod-borne viruses relies on using sentinel hosts to signal when a virus is circulating in an area. St. Louis Encephalitis virus has long been used as a classic example because it has a well-documented transmission cycle involving birds and mosquitoes in North America, and public health programs have historically used sentinel birds (such as chickens) with serologic testing to detect recent exposure. This approach lets researchers spot increasing arbovirus activity early by measuring antibodies in sentinel animals, providing a warning that guides mosquito control efforts and public health actions before human cases occur.

Rabies virus isn’t vectored by arthropods, so it doesn’t fit the sentinel testing framework for arboviruses. West Nile virus and Zika virus are also arboviruses and can be monitored in sentinel systems, but the traditional teaching and historical surveillance examples highlight St. Louis Encephalitis virus as the standard exemplar for this approach.