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.
Trask
J D
JD
Departments of Pediatrics, Medicine and Surgery, Yale University School of Medicine, and the New Haven Hospital and Dispensary, New Haven.
Paul
J R
JR
Beebe
A R
AR
German
W J
WJ