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B
Pasteur
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C
Lister
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D
Mayer
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Solution
The correct option is D Jenner
Edward Jenner found that vaccination with cowpox can protect individuals from smallpox. Edward Jenner was well known for his contribution to immunization and eradication of smallpox. Jenner's work was widely regarded as the foundation of immunology and known as the father of immunology. The smallpox vaccine was the only way to prevent smallpox. The vaccine was made from a virus either weakened or attenuated, which was introduced into the blood. This helps in building antibodies against the smallpox virus in the body. Smallpox was eradicated by this vaccination program, starting in 1967.