Key points are not available for this paper at this time.
J. Furesz, R. E. Armstrong, W. Yarosh, F. P. Nagler; Genetic Markers of Poliovirus Strains Isolated From Paralytic Patients Prior to and After Sabin Vaccin
Furesz et al. (1964) studied this question. Genetic markers of poliovirus strains isolated from paralytic patients were analyzed prior to and after the implementation of Sabin vaccination programs.