Vaccination strategies for SEIR models using feedback linearization.   Preliminary results
  A linearization-based feedback-control strategy for a SEIR epidemic model is discussed. The vaccination objective is the asymptotically tracking of the removed-by-immunity population to the total population while achieving simultaneously the remaining population (i.e. susceptible plus infected plus infectious) to asymptotically tend to zero. The disease controlpolicy is designed based on a feedback linearization technique which provides a general method to generate families of vaccination policies with sound technical background. 
M. De la Sen, A. Ibeas and S. Alonso-Quesada
math.DS