The Journal of Experimental Medicine, Vol 49, 985-991,
Copyright, 1929, by The Rockefeller Institute for Medical Research New York
STUDIES ON SOUTH AMERICAN YELLOW FEVER
:
II. IMMUNITY OF RECOVERED MONKEYS TO AFRICAN VIRUS.
Nelson C. Davis M.D.1
1 From the International Health Division of the Rockefeller Foundation, New York.
These experiments indicate that, although there are quantitative differences in virulence and minor differences in behavior, the African strain and the Brazilian strains of yellow fever virus tested are immunologically the same.
Submitted on March 18, 1929