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k0ka [10]
3 years ago
11

If you were to design an experiment to test whether a particular pathogen caused a disease, which of the following choices would

be the first step and which the last step you would make if you followed the scientific method precisely?
Health
1 answer:
algol [13]3 years ago
7 0
Smallpox<span> vaccine, the first successful vaccine to be developed, was introduced by Edward Jenner in 1796. He followed up his observation that milkmaids who had previously caught </span>cowpox<span> did not later catch </span>smallpox<span> by showing that inoculated</span>cowpox<span> protected against inoculated </span>smallpox<span>.</span>
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