Figure 1From: Experimental infection of duck origin virulent Newcastle disease virus strain in ducksClinical signs of infected ducks. A. Greenish-white diarrhea and unilateral leg paresis or paralysis in 15-day-old Shaoxing duck on day 3 PI. B. Bilateral leg paresis or paralysis in 15-day-old Shaoxing duck on day 4 PI. C. Twisting of head and neck in 15-day-old Gaoyou duck on day 4 PI.Back to article page