Rabies is a fatal viral infection spread through the saliva of infected animals, typically via bites or scratches. This pre-exposure vaccination is highly recommended for travellers visiting high-risk areas in Asia, Africa, and Central/South America, particularly those who will be in remote areas with limited access to medical care. While the initial course provides a baseline of protection, any animal bite abroad still requires urgent medical evaluation, though the treatment process is simplified for those already vaccinated.