Small ruminant lentivirus infections and diseases

Area of Science:

• Veterinary Virology
• Infectious Diseases
• Epidemiology

Background:

• Small ruminant lentiviruses (SRLVs) exhibit genetic diversity and can infect both sheep and goats.
• Effective control programs require understanding the full host range and genetic variability of SRLVs.
• The absence of vaccines highlights the importance of epidemiological knowledge for limiting SRLV spread.

Purpose of the Study:

• To provide a comprehensive overview of SRLV characteristics, pathogenesis, and associated syndromes.
• To review available diagnostic tools, transmission mechanisms, and current control strategies for SRLVs.
• To evaluate the cost-benefit variables influencing the implementation of SRLV control programs.

Main Methods:

• Literature review and synthesis of existing data on SRLV.
• Analysis of viral characteristics, disease progression, and clinical manifestations.
• Evaluation of diagnostic techniques, transmission routes, and control measures.

Main Results:

• SRLVs present significant genetic variability and cross-species transmission.
• Knowledge gaps exist in understanding pathogenesis and clinical syndromes across different hosts.
• Various diagnostic tools and control strategies have been developed, each with limitations.

Conclusions:

• Comprehensive epidemiological understanding is essential for SRLV control in sheep and goats.
• Careful evaluation of cost-benefit analyses is necessary before implementing control programs.
• Integrated strategies considering local surveillance and host range are key to managing SRLV infections.