Rabies is a virus - antibiotics don't have any effect on viruses.
Ceol may also be referring to the incubation time for rabies usually being more than a week - if you've just been infected with it and you present at day 7, then a prophylaxis will be administered.
Ceol may also be referring to the incubation time for rabies usually being more than a week - if you've just been infected with it and you present at day 7, then a prophylaxis will be administered.