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Answer1. No you neednot repeat the course .
Answer 2. Please do complete the course of five Im injections as scheduled .
Answer 3. Yes if a dog is alive after ten days it's usually a non rabid exposure however it's best not to stop the vaccination
course unless one is 100% sure of the dog being vaccinated or rabies
Answer 4. Yes antirabies vaccine
is very effective in non bite exposures with or without concomitant treatment with immunoglobulin .
Hope I have answered your queries.
Wishing you good health.