A. Fleming in 1945
B. Florey & Chain in 1975
C. Flore & Chain in 1795
D. Edward Jenner in 1795
The correct answer to the question: "Immunization by vaccination was first introduced by?" is "Edward Jenner in 1795".
A. Fleming in 1945
B. Florey & Chain in 1975
C. Flore & Chain in 1795
D. Edward Jenner in 1795
The correct answer to the question: "Immunization by vaccination was first introduced by?" is "Edward Jenner in 1795".
