Figure 1

Gross lesions of H5 HPAIV in naturally infected chickens, guinea fowls (A), and ducks (B). A 1, Facial edema, hemorrhages and necrosis involving comb, wattles and unfeathered skin, chicken. 2, Extensive cutaneous hemorrhages on legs, chicken. 3, Facial edema, guinea fowls. 4, Severe subcutaneous edema, chicken. 5, Diffuse congestion and edema, lung, guinea fowl. 6, Excess fluid within the lumina of air sacs, chicken. 7, Proventricular congestion and hemorrhages at the tip of proventricular glands, chicken 8, Hypertrophic and hemorrhagic appearance of spleen, chicken. 9, Hypertrophic and red appearance of kidney, chicken. B 1, Beak heterogeneous in color, with peripheral pallor and redness at the base, duck; 2, Diffuse congestion and edema, lung, duck. 3, Mottled and hypertrophic spleen, duck.