Evaluation of age-specific vaccination strategies

Under the assumption that maternal antibodies and vaccine immunity decay exponentially the proportions of susceptibles in the total population for given age-specific vaccination strategies and zero infection incidence are determined explicitly. The reciprocal value of such a proportion determines the maximum reproductive rate of an infection which could be eradicated by the corresponding strategy. For a single vaccination during life the optimum age is determined, for which the proportion of susceptibles reaches a minimum. The effect of one revaccination during school age is explored.