Primary Vaccination Age Introduction of first vaccine
BCG (BacilleCalmette Guerin) and Oral Polio At birth BCG live tuberculosis vaccine, 1924;Salk’s inactivated, injectable polio vaccine 1955; Sabin’s attenuated live oral polio vaccine trials begin 1960
Oral Polio and DPT (Diphtheria, Pertussis (whooping cough), and Tetanus)) + Hepatitis B 1.5 months For all three diseases in the 1920s Combined successfully in 1948
Oral Polio and DPT + Hepatitis B 2.5 months Hepatitis B first vaccine in 1981
Oral Polio and DPT + Hepatitis B 3.5 months
Measles 9 to 12 months Live attenuated vaccines for MMR, 1960-69