Which species typically serves as the amplifying host for Foot-and-Mouth Disease Virus?

Which species typically serves as the amplifying host for Foot-and-Mouth Disease Virus?

• A. Pigs
• B. Cattle
• C. Sheep
• D. Goats

Answer: (A)

Amplifying host refers to the species in which the virus replicates to very high levels and is shed in large quantities, driving rapid spread to other animals. For Foot-and-Mouth Disease Virus, pigs tend to produce large amounts of virus in saliva, nasal secretions, and especially in aerosols, creating efficient airborne transmission between herds. This explosive shedding makes pig populations a dominant source of new infections during outbreaks, so they are the typical amplifying host. While cattle can be infected and contribute to spread, their viral shedding is generally less explosive than in pigs. Sheep and goats can be susceptible but play a much smaller role in amplification. Therefore, the amplifying host is the pig.

Amplifying host refers to the species in which the virus replicates to very high levels and is shed in large quantities, driving rapid spread to other animals. For Foot-and-Mouth Disease Virus, pigs tend to produce large amounts of virus in saliva, nasal secretions, and especially in aerosols, creating efficient airborne transmission between herds. This explosive shedding makes pig populations a dominant source of new infections during outbreaks, so they are the typical amplifying host. While cattle can be infected and contribute to spread, their viral shedding is generally less explosive than in pigs. Sheep and goats can be susceptible but play a much smaller role in amplification. Therefore, the amplifying host is the pig.