Who developed the first polio vaccine?
AJonas Salk
BRobert Koch
CLouis Pasteur
DAlbert Sabin
Explanation
Dr. Jonas Salk developed the inactivated polio vaccine, which was declared safe and effective in 1955, significantly reducing the global burden of the disease.
Exam Relevance
- Topic: Competitive Exams
- Subtopic: General Awareness
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