...vaccine to date, ie tests prior to the approval of the vaccine by the Food and Drug Administration on two small a scale to permit accurate assessment of types and severity of adverse reactions—only widespread use can provide this assessment—and, B, insufficient experience in mass...

...vaccine to date, ie tests prior to the approval of the vaccine by the Food and Drug Administration on two small a scale to permit accurate assessment of types...efficacy of the vaccine. Moreover, there is no way to project whether the pathogen against which the vaccine may be used will be sufficiently similar to...

...vaccine to date. ie tests prior to the approval of the vaccine by the Food and Drug Administration on two small a scale to permit accurate assessment of types...reactions — only widespread use can provide this assess114 ment — and, B. insufficient experience in mass immunization programs to truly evaluate...

...These concerns stem from: a) the limited use of the vaccine to date, ie, tests prior to approval of a vaccine by the Food and Drug Administration are on too small a scale to permit accurate assessments of (he types and severity of advene reactions (only widespread use can provide this assessment);...