Generally, the tetanus vaccine is administered mainly to prevent infection by tetanus bacteria. If it achieves its preventive effect, it largely depends on avoiding contact in daily life. Normally, it is best to receive the vaccine within 24 hours, as this can reach a relatively high peak of prevention, usually above 95%. However, a small number of patients might still get infected even after vaccination, due to the incubation period of tetanus, which is generally within 14 days. Therefore, in the very latest scenario, vaccination against tetanus bacillus should be done within a week to be more effective in prevention. If the vaccination is delayed further, the chances of infection greatly increase. Therefore, it depends on the individual's situation to handle it timely, as getting vaccinated is the best approach.