VIRUSES OF POLIOMYELITIS : AN IMMUNOLOGICAL COMPARISON OF SIX STRAINS.
Qualitative immunological differences exist between early passage strains or so called human strains of the virus of poliomyelitis. These differences show a relationship to the epidemic source of the virus and are exemplified in this study by 4 strains isolated in different years during an eastern and western epidemic of poliomyelitis.
Departments of Pediatrics, Medicine and Surgery, Yale University School of Medicine, and the New Haven Hospital and Dispensary, New Haven.
J D
JD
Trask
J R
JR
Paul
A R
AR
Beebe
W J
WJ
German