The long view: Salmonella--the last forty years

Area of Science:

• Veterinary microbiology
• Avian pathology
• Food safety

Background:

• Salmonella research has seen major progress over the last four decades.
• Advances in molecular biology and immunology have significantly enhanced understanding of Salmonella bacteriology and infection biology.
• Improvements in poultry management and biological interventions have led to reduced incidence of foodborne Salmonella serovars.

Purpose of the Study:

• To review four decades of Salmonella research in avian species.
• To highlight progress in understanding Salmonella bacteriology and infection biology.
• To discuss the impact of interventions on reducing Salmonella incidence and controlling systemic diseases like fowl typhoid and pullorum disease.

Main Methods:

• Review of scientific literature on Salmonella research over the past 40 years.
• Analysis of the impact of molecular biology and immunology advancements.
• Evaluation of management practices, legislative pressures, and biological interventions in poultry.

Main Results:

• Significant reductions in foodborne Salmonella serovars in parent flocks, broilers, and layers have been achieved in many countries.
• Improved understanding of Salmonella has enhanced surveillance and biological interventions for intestinal carriage and systemic diseases.
• Fowl typhoid and pullorum disease remain significant economic challenges, particularly in regions with limited hygiene improvement potential.

Conclusions:

• Continued utilization of research findings will further improve Salmonella surveillance and control strategies.
• Integrated approaches combining management, legislative support, and biological interventions are crucial for reducing Salmonella prevalence in poultry.
• Addressing endemic Salmonella diseases like fowl typhoid and pullorum disease is vital for the global poultry meat economy.