S.W.
http://www.vaccineinformation.org/tetanus/qandadis.asp
Read the info about the symptoms, how long they last, and the fatality rate for those not vaccinated, then decide.
An "artificial shot" can absolutely, and has been proven, to provide immunity. The numbers of people who have died from "lock jaw" have gone down precipitously (from 500-600 cases per year to 20 cases in 2003) since widespread immunization became common. The bacteria that causes Tetanus can NOT be killed by any chemical - hydrogen peroxide or any other.