Virus
Explanation
Foot-and-mouth disease (FMD) is a severe, highly contagious viral disease affecting cloven-hoofed animals. It is a transboundary animal disease (TAD) that deeply impacts the production of livestock and disrupts regional and international trade in animals and animal products.
Detailed Analysis
- Causative Agent: FMD is caused by an Aphthovirus of the family Picornaviridae. There are seven strains (serotypes) of the virus: A, O, C, SAT1, SAT2, SAT3, and Asia1.
- Affected Hosts: The disease primarily affects cloven-hoofed animals, including cattle, buffalo, sheep, goats, and pigs. It is rarely fatal in adult animals but causes high mortality in young animals due to myocarditis.
- Distinction from Human Disease: It is distinct from "Hand, Foot, and Mouth Disease" (HFMD), which is a common human illness caused by a different virus (Coxsackievirus). FMD is not a public health or food safety threat to humans.
Key Takeaway: Foot-and-mouth disease is caused by a virus (specifically Picornavirus) and affects cloven-hoofed livestock, unlike bacterial or fungal infections.