Who prepared the first effective vaccine against polio?

Correct option is B

The correct answer is (b) Jonas E. Salk
· Jonas E. Salk prepared the first effective vaccine against polio in 1955. Salk's vaccine, known as the inactivated polio vaccine (IPV), used killed poliovirus to generate immunity without causing the disease. This vaccine played a pivotal role in reducing polio cases worldwide and laid the foundation for further developments in polio eradication.
Additional Information:
· Robert Edwards: Known for pioneering in vitro fertilization (IVF), leading to the birth of the first "test-tube baby."
· John Gibbson: Not directly related to vaccines; he was a pioneer in heart-lung machines used in surgery.
· Louis Pasteur: A key figure in microbiology, developed the rabies and anthrax vaccines, and introduced the concept of pasteurization.