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Who discovered the technique of preparing vaccine from attenuated pathogen and in which year?

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in Biology – Class 12 by (271k points)
Who discovered the technique of preparing vaccine from attenuated pathogen and in which year?

(a) Edward Jenner, 1796

(b) Louis Pasteur, 1879

(c) Robert Downey, 1856

(d) Von Behring, 1950

This question was addressed to me in a national level competition.

This interesting question is from Human Health and Disease in division Human Health and Disease of Biology – Class 12

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Correct answer is (b) Louis Pasteur, 1879

The best I can explain: Louis Pasteur discovered the technique of preparing vaccine from an attenuated pathogen in 1879. This was the first true vaccine consisting of weakened micro-organisms against the disease chicken cholera.

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