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Question 1 of 29

Which significant public health achievement in the 20th century helped reduce the global incidence of smallpox?

Rationale:
The smallpox eradication campaign significantly reduced the global incidence of smallpox. This campaign, led by the World Health Organization, employed widespread vaccination, surveillance, and containment strategies, ultimately achieving complete eradication of smallpox by 1980, marking a landmark public health victory and eliminating the disease worldwide. A: The introduction of the polio vaccine targeted poliovirus, not smallpox, thus it did not directly impact smallpox incidence globally. C: The development of the tuberculosis vaccine addressed TB prevention but did not influence smallpox control or reduction. D: The WHO's health for all campaign focused on broad health equity, not specifically on eradicating smallpox or directly reducing its incidence.