In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
Q: Noting the common observation that milkmaids were generally immune to smallpox , Jenner postulated that the pus in the blisters that milkmaids received from cowpox ( a disease similar to smallpox , but much less virulent ) protected them from smallpox .
A:
Jenner thought that the pus in the blisters that milkmaids received from cowpox ( a disease similar to smallpox , but much less virulent ) protected them from smallpox .