the present paper gives data on the safety and immunological activity of the live vaccine , on virus carriage and transmission of the vaccine virus to contacts , and on virus interference.in a comparison between poliomyelitis incidence in 1960 in regions where mass live vaccine immunization had been carried out and the incidence in areas where inactivated salk vaccine was used in 1958-60 , it is shown that , while the salk vaccine did not fundamentally influence the epidemic process , the sabin live vaccine brought about a sharp reduction in incidence and prevented the usual summer-autumn rise in the number of poliomyelitis cases .
C0042210
vaccine
C0042211
live vaccine