Transboundary Emerging and Exotic Animal Disease/ Exotic Animal Disease Practice Exam

Which of the following is a significant feature of the clinical signs of PED?

1. Symptoms change with the age of the pig

2. Highly uniform symptoms across affected pigs

3. Only affects breeding sows

4. Symptoms are primarily respiratory in nature

The correct answer is: Highly uniform symptoms across affected pigs

The significant feature of the clinical signs of Porcine Epidemic Diarrhea (PED) is that there are highly uniform symptoms across affected pigs. PED primarily causes severe diarrhea and dehydration, which can lead to increased mortality, particularly in young pigs. The uniformity of symptoms is notable as it indicates that the disease affects pigs similarly, regardless of individual differences or other factors. This uniform presentation makes it easier for veterinarians and producers to recognize and diagnose the disease quickly in affected herds. Effective management and control strategies can be implemented once the disease is identified, as the consistent clinical signs point to a specific infectious agent. Regarding the other options, the symptoms do vary with the age of the pig, especially since younger pigs exhibit the most severe signs. The disease is not limited to affecting only breeding sows; it can impact pigs of all ages, but especially those under three weeks old. Lastly, while some respiratory distress may be observed, the primary symptoms of PED are gastrointestinal rather than respiratory, further distinguishing it from other diseases that may primarily target the respiratory system.