A Crucial Reminder About the Importance of Vaccines

An old medical textbook page shows two 13-year-old boys; one is covered in severe smallpox lesions while the other is uninfected. The text explains that the vaccinated boy on the right has only two scabbed spots, contrasting with the fully pustular infection on the left. The page defines variola (smallpox) and varioloid (a mild form in vaccinated individuals).

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