This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of Control, Subject name: Social & Preventive Medicine
Small pox vaccine was invented by? 
Select and explain. 
A. Louis pasture, B. Edward Jenner, C. Paul Eugene, D. John snow
B: Edward Jenner
Answer: B: Edward Jenner 
Explanation: ANSWER: (B) Edward JennerREF: Jawetz's 24th ed chapter 34Edward Jenner introduced vaccination for small pox with live cowpox virus in 1798.