Adverse events associated with childhood vaccines evidence bearing on causality washington dc the national academies press doi 1017226 2138 x save cancel 11 need for research and surveillance the lack of adequate data regarding many of the adverse events under study was of major concern to the committee presentations at public meetings indicated that many parents and physicians . If the evidence favors the acceptance of or establishes a causal relation between a vaccine and an adverse event and if that adverse event can be fatal then in the committees judgment the evidence favors the acceptance of or establishes a causal relation between the vaccine and death from the adverse event direct evidence regarding death in association with a potentially fatal adverse event that itself is causally related to the vaccine is limited to tetanus diphtheria toxoid for . Adverse events associated with childhood vaccines evidence bearing on causality washington dc the national academies press doi 1017226 2138 x save cancel 7 polio vaccines background and history poliomyelitis is an acute infectious disease caused by an enterovirus there are three types of this virus types 1 2 and 3 each type is capable of infecting humans there is no cross . Adverse events associated with childhood vaccines evidence bearing on causality childhood immunization is one of the major public health measures of the 20th century and is now receiving special attention from the clinton administration. Adverse events associated with childhood vaccines adverse events associated with childhood vaccines evidence bearing on causality kathleen r stratton cynthia j howe and richard b johnston jr editors division of health promotion and disease prevention institute of medicine p cm the project was supported by funds coordinated through the national institute of allergy and