The number of rabies shots does not depend on whether the person is an adult or a child, but rather on whether it is pre-exposure prophylaxis or post-exposure prophylaxis, and it is also necessary to look at the instructions for the rabies vaccine. If it is pre-exposure prophylaxis, which means that you are not currently taking the risk of contracting rabies, you will only need three shots at this point, and the specific timing of the three shots can be days 0, 7 and 21, or you can change the 21 days to 28 days. The rabies vaccine, if given for post-exposure prophylaxis, is given when a person has been bitten or scratched and bears the risk of contracting rabies. A five-shot injection regimen is available, or a four-shot injection regimen is available according to the appropriate instructions. Only a portion of the rabies vaccine’s instructions indicate that the four-shot option can be used, and only then can the four-shot option be used, while the rest of the vaccine is meant to be used as a five-shot option. The rabies vaccine should be administered in accordance with the procedure so that the antibodies can be produced in sufficient quantities and for a long enough period of time.