the development of the first vaccine was due to the observation that milkmaids who had been exposed to cowpox did not succumb to the deadly plague of small pox that was ravishing both europe and britain. imagine that you are edward jenner, the developer of the first smallpox vaccine. you have gone through the various steps of the scientific method up making the prediction that if you purposely infect people with cowpox, that they will also develop an immunity to small pox. generally, the next step in the scientific method after this point should be:
