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Summary
Sublethal rabies virus doses from rodents caused non-lethal infections in mice. Immune responses fluctuated, with some virus multiplication observed, indicating complex rabies virus dynamics in small mammals.
Area of Science:
- Virology
- Immunology
- Zoonotic Diseases
Background:
- Rabies virus poses a significant public health threat, particularly strains from wildlife reservoirs.
- Understanding the pathogenesis of sublethal rabies virus infections is crucial for disease control.
Purpose of the Study:
- To investigate the effects of sublethal rabies virus inoculation from small wild rodents in a mouse model.
- To characterize the immune response and viral dynamics during non-lethal rabies virus infection.
Main Methods:
- White mice were inoculated with sublethal doses of rabies virus strains isolated from small wild rodents.
- Virus-neutralizing and protective activities were measured in mouse sera and brain suspensions.
- Viral infectivity and multiplication were assessed over time.
Main Results:
- Inoculation resulted in non-lethal infections in white mice.
- Virus-neutralizing and protective activities initially increased within 48 hours post-inoculation.
- A transient decrease in these activities was observed on days 3-4, with some instances of transient virus multiplication and retained infectivity.
Conclusions:
- Sublethal rabies virus infections from rodent strains can establish in mice without causing lethality.
- The observed fluctuations in immune activity and transient viral replication highlight the complex interplay between the virus and the host immune system in sublethal infections.