The Boston smallpox inoculation controversy of 1721 arose during a severe outbreak when Puritan minister Cotton Mather and physician Zabdiel Boylston introduced variolation as a preventive measure. Their efforts faced fierce political and religious opposition, leading to public protests and violent resistance. This controversy highlighted the tensions between science and public perception, ultimately paving the way for future public health initiatives.

The Boston Smallpox Inoculation Controversy sparked a pamphlet war that shaped early American public rhetoric. This conflict forced New England's religious verse tradition to reconcile scientific intervention with divine providence, leading to a rich dialogue in poetry about faith, health, and community responsibility.