YERSINIA PSEUDOTUBERCULOSIS, SEROGROUP O:1A, INFECTION IN TWO AMAZON PARROTS (AMAZONA AESTIVA AND AMAZONA ORATRIX) WITH HEPATIC HEMOSIDEROSIS.
Necropsies were conducted on a female blue-fronted Amazon (Amazona aestiva) and a female yellow-headed Amazon (Amazona oratrix) that died after depression, ruffled feathers, diarrhea, and biliverdin in the urine. Gross and microscopic examinations revealed multifocal necrosis in the liver, spleen, lungs, kidneys, intestines, and heart caused by acute bacteremia. Yersinia pseudotuberculosis, serogroup O:1a, was isolated by culturing from the visceral lesions in the liver, intestines, and spleen. Virulence gene analysis showed the presence of the inv gene and the complete pathogenicity island: IS100, psn, yptE, irp1, irp2 ybtP-ybtQ, ybtX-ybtS, and int asnT-Int. Histopathologic findings and chemical analysis also demonstrated hepatic hemosiderosis. As has been demonstrated in other species, hemosiderosis may predispose Amazona spp. to systemic infection with Y. pseudotuberculosis after enteric disease.
Livio
L
Galosi
Silvana
S
Farneti
Giacomo
G
Rossi
Susan Catherine
SC
Cork
Stefano
S
Ferraro
Gian Enrico
GE
Magi
Stefano
S
Petrini
Andrea
A
Valiani
Vincenzo
V
Cuteri
Anna-Rita
AR
Attili
D046708:Amazona; D000818:Animals; D001715:Bird Diseases / Q000382:microbiology* / Q000473:pathology; D017809:Fatal Outcome; D005260:Female; D006486:Hemosiderosis / Q000150:complications / Q000662:veterinary*; D008107:Liver Diseases / Q000150:complications / Q000662:veterinary*; D015009:Yersinia Infections / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D015011:Yersinia pseudotuberculosis / Q000145:classification*
Amazona aestiva; Amazona oratrix; Yersinia pseudotuberculosis; blue-fronted Amazon; iron; liver; yellow-headed Amazon