Which of the following diseases can be classified as reportable?

Reportable diseases are those that are required by law to be reported to government authorities when diagnosed or suspected. This process helps in tracking and controlling public health threats. The correct answer includes diseases like rabies and foot-and-mouth disease because they pose significant health risks to both humans and animals. Rabies, for instance, is a zoonotic disease that can be fatal to humans if not treated promptly and is therefore closely monitored. Foot-and-mouth disease is critical in veterinary health due to its potential to devastate livestock populations, impacting food supply and economy.

In contrast, not all diseases are classified as reportable, which explains why endemic diseases alone, those regulated specifically by only state authorities, or diseases that only affect livestock do not capture the full spectrum of reportable conditions. Many reportable diseases include both zoonotic infections and those affecting animal health, emphasizing the importance of public health surveillance across different species. Hence, option B accurately reflects the nature of reportable diseases, which encompass significant zoonotic and economic health concerns.