Question 26

Dr. Jonas Salk developed a vaccine against Polio.

Dr. Jonas Salk developed a vaccine in the 1950s specifically targeting polio, a viral disease that can cause paralysis and has historically led to widespread outbreaks.

A) Polio

This option is correct as Dr. Jonas Salk is renowned for creating the first effective vaccine against polio, which significantly reduced the incidence of this debilitating disease worldwide.

B) Measles

This option is incorrect because the vaccine for measles was developed later by other researchers, notably by John Enders and his team in the 1960s. Salk's work focused solely on polio.

C) Tuberculosis

This option is incorrect as the vaccine for tuberculosis, known as the BCG vaccine, was developed by Albert Calmette and Camille Guérin in the early 20th century, long before Salk's polio vaccine.

D) Malaria

This option is incorrect because there has not been a widely accepted vaccine for malaria developed by Salk. The research on malaria vaccines has been ongoing and developed by different scientists over the years.

Conclusion

Dr. Jonas Salk's development of the polio vaccine was a significant medical breakthrough, effectively preventing a disease that caused widespread fear and disability. All other options relate to diseases for which vaccines were developed by other researchers or at different times, confirming that A) Polio is the only correct answer.