If the patient has had a vaccination in the past: an antibody result is needed, preferably done within the last 30 days. On this basis, the doctor decides whether or not a booster dose is needed. If the patient is not sure if they have had vaccination in the past: need antibody result done in the last 30 days. If the patient has never had a vaccination he does not need to do antibodies, but it is clear that 3 doses will be needed (scheme 0-1-6 one month after the first dose the second dose and 6 months after the first dose the third dose).