CURS 4 MamAviSalm FRA 2026

This lecture provides a comprehensive overview of salmonellosis in mammals and birds, focusing on cattle. It begins with the classification of Salmonella species and serovars, detailing the antigenic structure (O and H antigens) and the Kauffmann-White scheme for serotyping. The pathogenesis is explained through virulence factors such as LPS, enterotoxins, cytotoxins, and pili, and the role of plasmids in virulence and antimicrobial resistance. The lecture covers isolation and identification methods, including selective enrichment and differential media, and discusses factors affecting growth and survival. Clinical manifestations in cattle are described, including septicemia, enteritis, and abortion, with emphasis on Salmonella Dublin and S. Typhimurium. Epidemiology highlights the importance of carrier animals, environmental contamination, and management practices. The zoonotic potential is noted, with transmission to humans via contaminated food. The lecture also touches on antimicrobial resistance, particularly in S. Typhimurium DT104. Overall, it is a detailed educational resource for veterinary students.