[Looking back on past decades of vaccinology].

Author makes a survey upon the progress of vaccinology from the Jennerian times up to the modern vaccines of our ages, particularly as far as Hungary is concerned. Some pictures of the vaccinology to come are dealt with, too, e.g. genetic methods, mucosal immunization etc. Some changes in vaccinology caused by either favourable (polio) or unfavourable (pertussis) impacts and by introduction of new vaccines are described. The activity of the "Clinical vaccination service" (clinical consultation, teaching) is detailed.