Only after the second inoculation it reaches the degree ensuring safety.
Therefore is useless to begin an inoculation after the child dangerously wounds himself.
In this case the child needs to enter antitetanic serum.
So, in a year after an initial inoculation do to the child a repeated inoculation, then the inoculation is repeated by each years.
In addition to the main inoculation to the child enter antitetanic toxoid in case of dangerous wound.
This additional inoculation increases at once its immunity..