Can you clear my confusion some doctors says anti rabies vaccine gives you protection for 3 months after completing anti rabies vaccine course of 4 vaccines day 0 3 7 28 for 3 months if again scratch or bitten happens again you don't need any vaccine not even 2 booster dose and some doctors says anti rabies vaccine protect you for 6 months after completing the vaccination course so which is correct 3 months or 6 months.