The prevention of the diseases caught by inoculation seems to be the most efficient investment in the public health participating to the stabilization of the social uprightness and to the socio-economical consolidation of the family and society. Through immunizations health is promoted and the medical detriments are minimized, as well as the social and the economical ones, caused by the diseases caught by inoculation, infirmity and death. The moral aspect of immunization, recognized in the entire world, consists of the fact that every MAN born has the right to live a happy long life without any pain caused by diseases.. Economical aspect-The World-wide Bank thinks that THE MAN in the most precious capital for investments in education, training as to produce financial goods and to provide continuity to mankind. Immunizations are recognized and practiced all over the world. The Republic of Moldavia was and still is a good promoter of inoculations, securing in this way a high protection of the population against infectious diseases.