Rabies DNA Vaccines: Current Status and Future

Padinjaremattathil Thankappan Ullas, Anita Desai, Shampur Narayan Madhusudana

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Department of Neurovirology, National Institute of Mental Health & Neurosciences, Bangalore, India.

DOI: 10.4236/wjv.2012.21005                

Abstract

Rabies continues to be a significant cause of human and animal mortality, despite the availability of safe and effective prophylactics. Apart from limited access, the cost and complex schedules of rabies biologics often impact on the success of post-exposure prophylaxis in humans in the endemic countries. Mass vaccination of dogs, critical in rabies control, often fails to achieve its goal in rabies-endemic countries due to logistic, animal and vaccine-related issues. DNA vaccination has been proposed as a cheaper and efficient strategy for rabies prophylaxis, and its feasibility has been demonstrated in a number of animal models including companion animals, since 1994. Despite the proven efficacy, the technology suffers from a few drawbacks that limit its large-scale application, such as delayed and weaker immune responses in larger animals. Recent advances in the field of vector design and delivery hold promise for enhancement of rabies DNA vaccine efficacy. The present article provides an overview of developments in the field of DNA rabies vaccination and its future prospects.

Keywords

Rabies; Plasmid; DNA Vaccine; Glycoprotein; Prophylaxis

Conflicts of Interest

The authors declare no conflicts of interest.

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