The pioneer in concept of specific protection by vaccine was ?
Ans. is 'a' i.e., ChineseThe Chinese were early poineers of immunizations. They practiced voriolation to prevent small pox.Similar practice is also known to be prevalent in the early Ayurveda period, which was quoted by Edward Jenner to the Royal society to get approval for first proposed small pox vaccine.
Chinese
Robe koch
Ambroise parre
Louis Pasteur