Slow infection control by vaccination: paratuberculosis

Area of Science:

• Veterinary Medicine
• Infectious Disease Epidemiology
• Animal Health

Background:

• Classical causality models are insufficient for understanding slow-progressing infections by weakly pathogenic agents.
• These infections can lead to protracted clinical courses, exhausting host resources and impacting animal production.
• A slow infection concept offers a better framework for these emerging disease dynamics.

Purpose of the Study:

• To propose a revised causality model for infectious diseases, accommodating slow infections.
• To explore the application of this model in controlling diseases that don't meet conventional criteria.
• To discuss paratuberculosis control as a case study for preventive treatment strategies.

Main Methods:

• Conceptual review of infectious disease causality models.
• Application of the slow infection concept to disease pathogenesis.
• Case study analysis of paratuberculosis vaccination strategies.

Main Results:

• The slow infection model provides a framework for understanding diseases with atypical presentations.
• Vaccination against paratuberculosis can modify infection course, preventing clinical manifestations.
• Preventive treatment can be beneficial even when complete infection control is not achieved.

Conclusions:

• A shift towards slow infection models is needed for understanding and managing certain infectious diseases.
• Paratuberculosis control via vaccination highlights the potential of modifying disease progression.
• Sustainable animal production requires effective strategies for managing persistent, low-virulence infections.