[Immunology of Chagas' disease].

American trypanosoniasis or Chagas' Disease is a serious health problem in Latin America. Schizotrypanum (Trypanosome) cruzi infection produce an inmune response, cellular and humoral well identified in all mammals so far studied, including man. The initial parasistemic disease is brought promptly under control, maybe as result of such inmune response. Chronical disease result of individual responses, through inmune aberration as main pathogenic factor. There is not, and there is no probability to develop it in a short time, suitable inmunoprophylaxis for Chagas' disease.